Chapter1- Introduction to Computing and Programming
PROGRAMMING EXERCISES
1. Write a program that produces the following output. Replace the name
Tyler Howard with your name.
Hello World! My name is Tyler Howard!
/* DisplayName.cs
* This program displays a message to the world
* containing a person's name. It
* gives practice creating a first
* program.
*/
using
using
using
using
using
System;
System.Collections.Generic;
System.Linq;
System.Text;
System.Threading.Tasks;
namespace DisplayName
{
class DisplayName
{
static void Main(string[] args)
{
Console.WriteLine("Hello World, my name is Tyler
Howard!");
Console.ReadKey();
}
}
}
2. First develop a prototype, and then write a program that displays the name of
the programming language discussed in this text. You should be more
creative, but one possible design is given here.
3. Print your name, school, and the year you plan to graduate. Place your name
on one line and your graduation year on the second line. Be sure to include
appropriate labels. For example, my information would look like the following,
if I planned to graduate in 2017:
Name: Barbara Doyle
Graduation Year: 2017
School: Jacksonville University
4. Develop an application that produces a banner containing information about
your project. Items you might include are your programming assignment
number, name, date submitted and the purpose of the application. Label each
item. These are items you might want to include as internal documentation
on future programming assignments. Your output for your banner might
look similar to the following:
********************************************************
** Programming Assignment #4
**
** Developer: Alma King
**
** Date Submitted: September 17
**
** Purpose: Provide internal documentation.
**
********************************************************
In addition to printing the output screen banner shown in the preceding code
segment, be
sure to include appropriate comments as internal documentation to your program.
Flags are a symbol of unity and invoke special meaning to their followers.
Create a design for a flag, and write a program that displays your design. One
possible design follows.
*******——————————————————————————————————
*******——————————————————————————————————
*******——————————————————————————————————
*******——————————————————————————————————
—————————————————————————————————————————
—————————————————————————————————————————
6. Create an application that produces three different outputs using the same
phrase. Select your own favorite popular saying for the phrase. The phrase
should first be displayed on one line. Use at least three Write( ) methods - but
the output should all appear on a single line.
Then print the phrase on three lines, again using only Write( ) methods. For
your third and final output, print your favorite saying one word per line.
Decide which combination of Write( ) and/or WriteLine( ) would be the
most streamlined approach. Following is an example of what the final output
would look like using a favorite saying of the author:
7. Produce a listing containing information about you. Include items such as,
your name, hometown, major, hobby and/or favorite activity. Label each
piece of information, place each of the items on separate lines and place a
backslash (\) after each entry. Begin and end the entire listing with the |
character. Include the full listing in a box of asterisks. Your output might look
similar to the following:
8. Hangman is a favorite childhood game. Design the stick figure for this game
and produce a printed listing with your stickman. One possible design
follows. You may implement this design or develop an improved version.
(^;^)
|
./ | \.
|
_/ \_
9. Create an application that displays the following patterns. You may use any
character of your choice to construct the pattern. One possible solution
follows.
10. Write your initials in block characters to a standard output device. Design
your prototype using the symbol(s) of your choice. For example, my initials
in block characters are shown below.
BBBBBBBBBBBBBB AA DDDDDDDDDDDDDDDDD
BB BB AA AA DD DD
BB BBBB AA AA DD DD
BB BB AA AA DD DD
BB BB AA AA DD DD
BBBBBB AA AA AA AA AA AA DD DD
BB BB AA AA DD DD
BB BB AA AA DD DD
BB BBBB AA AA DD DD
BB BB AA AA DD DD
BBBBBBBBBBBBBBB AA AA DDDDDDDDDDDDDDDDD
Chapter2. Data Types and Expressions
PROGRAMMING EXERCISES
For each of the exercises, be sure to include appropriate comments, choose
meaningful identifiers, and use proper indentations in your source code.
1. Design an application that converts miles to feet.





Declare and initialize miles to 4.5.
Show your miles formatted with two positions to the right of the decimal.
Feet and inches should both be shown with no positions to the right of the decimal.
Once you get that portion running, modify your solution so that you also show the
total number of inches.
Go into your source code and change the initialization value for miles. Rerun the
application.
2. Write a program that converts a mile into its equivalent metric kilometer
measurement.
 Test the program by performing a compile-time initialization of 10 for the miles
value.
 Display the original miles and the formatted converted value.
 Go into your source code and change the initialization value and rerun the
application with a new mile value of 3.5.
 For an additional challenge, include in your application a kilometer to miles
converter.
3. Write a program that converts a temperature given in Celsius to Fahrenheit.
 Test the program by performing a compile-time initialization of 32 for the
original Celsius value.
 Display the original temperature and the formatted converted value.
 Go into your source code and change the initialization value to 0.
 Rerun the application.
 Select additional test values and rerun the application.
4. Write a program that shows the formatted retail price of items when there is
a 15% markup.
 Test the program by performing a compile-time initialization with Ruggy
Shoes, which has a wholesale price of $52.00.
 Display appropriately2labeled retail and wholesale values for the shoes.
 Once you get that running, go back into your source code, add lines of code
that will reassign the memory location’s values for a Teno Jacket, which has a
wholesale price of $71.00.
 Add additional lines of code, which will display the new information.
5. Write a program that calculates and prints the take-home pay for a commissioned
sales employee. Perform a compile-time initialization and store the name of
Nesbith Lang in a variable called employeeName. Nesbith earns 7% of her total
sales as her commission. Her federal tax rate is 18%. She contributes 10% to a
retirement program and 6% to Social Security. Her sales this month were
$161,432. Produce a formatted report showing the amount for each of the
computed items. Select appropriate constants. After you finish displaying Nesbith
Lang’s data, change the values and rerun the application.
6. Write a program that computes the average of five exam scores. Declare and
perform a compile-time initialization with the five values. Use a constant to
define the number of scores. Print all scores and the average value formatted
with no digits to the right of the decimal. Rerun the application with different
values.
7. Write a program that prints the number of quarters, dimes, nickels, and
pennies that a customer should get back as change. Run your program once
by performing a compile-time initialization using 92 cents for the value to
be converted. Go into your source code and change the 92 to 27. Rerun the
application.
8. Write a program that computes a weighted average giving the following weights.
Homework: 10%
Projects: 35%
Quizzes: 10%
Exams: 30%
Final Exam: 15%
Do a compile-time initialization with the following values:
Homework: 97; Projects: 82; Quizzes: 60; Exams: 75; Final Exam 80. Display
all values, including the weights, appropriately labeled and formatted. Rerun
the application with different values.
9. Write a program that computes the amount of money the computer club will
receive from the proceeds of their granola project. Each case has 100 bars. The
granola bars sell for $1.50 per bar. Each case costs $100.00. They are required to
give the student government association 10% of their earnings. Display their
proceeds, showing the amount given to the student government association.
Show all the values formatted with currency. Do a compile-time initialization
using 29 for cases sold.
10. In countries using the metric system, many products are sold by grams and
kilograms as opposed to pounds and ounces. Write an application that converts
grams to pounds and will display the price of the product by pound. Test your
application by doing a compile-time initialization of a product called Montreal
Smoked Meat, which sells for $2.09 per 100 grams.
Chapter3. Methods and Behavior
PROGRAMMING EXERCISES
1. Write an application that includes two additional methods in addition to the
Main( ) method. One method should return a string consisting of four or
five lines of information about your school. The other method should return
a string consisting of asterisks. First call the method that returns the string of
asterisks. Call the method that returns the asterisk a second time after you
invoke the method that displays the information about your school. Items
you might include are the name of your school, number of students enrolled,
and school colors. Include appropriate labels. The display should be aesthetically
pleasing so include enough asterisks to surround your listing.
2. Design a message display application. Allow users to enter their name and
favorite saying in a single method that gets invoked two times. First call the
method asking for the person’s name. Send a string argument indicating what
value should be entered. Invoke the method a second time to retrieve the
favorite saying. Return the string values back to the Main( ) method. Call
another method, sending the name and saying. From that method, display the
message showing the person’s name and their saying surrounded by rows of
greater than/less than symbols(<><><>).
3. Write an application that allows a user to input the height and width of a
rectangle and output the area and perimeter. Use methods for entering the
values, performing the computations, and displaying the results. Results
should be formatted and printed in a tabular display.
4. Design an application using methods that convert an integer number of
seconds to an equivalent number of hours, minutes, and seconds. Use
methods for entering the initial seconds, performing the computations, and
displaying the results. Results should be formatted and printed in a tabular
display.
5. Write a program that converts a temperature given in Fahrenheit to Celsius.
Allow the user to enter values for the original Fahrenheit value. Display the
original temperature and the formatted converted value. Use appropriate
methods for entering, calculating, and outputting results.
6. Write a program that can be used to convert meters to feet and inches. Allow
the user to enter a metric meter value in a method. Write appropriate
methods for your solution.
7. Write a program that can be used to determine the tip amount that should
be added to a restaurant charge. Allow the user to input the total, before
taxes and the tip percentage (15% or 20%). Produce output showing the
calculated values including the total amount due for both the 15% and the
20% tips. Tax of 9% should be added to the bill before the tip is determined.
Write appropriate methods for your solution.
8. Write a program that computes the amount of money the computer club
will receive from proceeds of their granola bar sales project. Allow the user
to enter the number of cases sold and the sale price per bar. Each case
contains 12 bars; each case is purchased at $5.00 per case from a local vendor.
The club is required to give the student government association 10% of their
earnings. Display their proceeds formatted with currency. Write appropriate
methods for your solution.
9. Write a program that calculates and prints the take-home pay for a commissioned
sales employee. Allow the user to enter values for the name of the
employee and the sales amount for the week. Employees receive 7% of the
total sales. Federal tax rate is 18%. Retirement contribution is 15%. Social
Security tax rate is 9%. Use appropriate constants. Write input, display, and
calculation methods. Your final output should display all calculated values,
including the total deductions and all defined constants.
10. Write an application that helps landowners determine what their property
tax will be for the current year. Taxes are based on the property’s assessed
value and the annual mileage rate. The established mileage rate for the
current year is $10.03 per $1000 value. Homeowners are given a $25,000
tax exemption, which means they may subtract $25,000 from the assessed
value prior to calculating the taxable value. Enable users to enter the
property address and the prior year’s assessed value. The township has
decided to increase all properties’ assessed value 2.7% for the current year
to add additional monies to the school budget line. Provide methods to
compute and return the new assessed value and the proposed taxes for the
current year. Provide another method that displays the formatted values.
Chapter4. Creating your own classes
PROGRAMMING EXERCISES
1. Create a class representing a student. Include characteristics such as student
number, first and last name, overall GPA, classification, and major.



Write at least two constructors.
Include properties for each of the data items.
Create a second class that instantiates the first class with information about yourself.
In the second class, create a class method that displays your name and GPA.
2. Create a Motorway class that can be used as extra documentation with
directions. Include data members such as name of motorway, type (i.e.,
Road, Street, Avenue, Blvd., Lane, etc.), direction (i.e., E, W, N, or S),
surface (i.e., blacktop, gravel, sand, concrete), number of lanes, toll or no toll,
and the party that maintains it. Write instance methods that returns the full
name of the motorway, full name of the motorway and whether it is toll or
not, and full name of the motorway and the number of lanes. Also include a
ToString( ) method that returns all data members with appropriate labels.
Include enough constructors to make the class flexible and experiment with
using the class diagram to create the property members.
3. Create an Employee class. Items to include as data members are
employee number, name, date of hire, job description, department, and
monthly salary.
 The class is often used to display an alphabetical listing of all employees.
 Include appropriate constructors and properties.
 Override the ToString ( ) method to return all data members.
 Create a second class to test your Employee class.
4. Create a Receipt class that could be used by an automobile parts store.
Items to include as data members are receipt number, date of purchase,
customer number, customer name and address, customer phone number,
item number, description, unit price, and quantity purchased. For simplicity
you may assume each receipt contains a single item number. Include
appropriate constructors and properties plus an additional method that
calculates the total cost using the quantity and unit price. Override the
ToString ( ) method to return the information about the customer (name
and phone number) and the total cost of the item purchased. Create a
second class to test your Receipt class.
5. Create a Date class with integer data members for year, month, and day.
Also include a string data member for the name of the month. Include a
method that returns the month name (as a string) as part of the date. Separate
the day from the year with a comma in that method. Include appropriate
constructors, properties, and methods. Override the ToString ( ) method
to display the date formatted with slashes (/) separating the month, day, and
year.
6. Create a Trip class. Include as data members destination, distance traveled,
total cost of gasoline, and number of gallons consumed. Include
appropriate constructors and properties. Add additional methods that calculates
miles per gallon and the cost per mile. Override the ToString ( )
method. Create a second class to test your Trip class.
7. Create a Money class that has as data members dollars and cents. Include
IncrementMoney and DecrementMoney instance methods. Include constructors
that enable the Money class to be instantiated with a single value
representing the full dollar/cent amount as well as a constructor that enables
you to create an instance of the class by sending two separate integer
values representing the dollar and cent amounts. Include an instance method
that returns as a string the number of dollars, quarters, nickels, dimes, and
pennies represented by the object’s value. Override the ToString( )
method to return the monetary amount formatted with currency symbols.
Create a second class to test your Money class.
8. There are a number of national and state parks available to tourists. Create a
Park class. Include data members such as name of park, location, type of
(i.e., national, state, local) facility, fee, number of employees, number of
visitors recorded for the past 12 months, and annual budget. Write separate
instance methods that a) return a string representing name of the park, the
location and type of park; b) return a string representing the name of the
park, the location and facilities available; c) compute cost per visitor based
on annual budget and the number of visitors during the last 12 months; and
d) compute revenue from fees for the past year based on number of visitors
and fee. Also include a ToString( ) method that returns all data members
with appropriate labels. Create a second class to test your Park class.
9. Write a program that includes an Employee class that can be used to
calculate and print the take-home pay for a commissioned sales employee.
All employees receive 7% of the total sales. Federal tax rate is 18%. Retirement
contribution is 10%. Social Security tax rate is 6%. Write instance
methods to calculate the commission income, federal and social security tax
withholding amounts and the amount withheld for retirement. Use appropriate
constants, design an object-oriented solution, and write constructors.
Include at least one mutator and one accessor method; provide properties for
the other instance variables. Create a second class to test your design.
Allow the user to enter values for the name of the employee and the sales
amount for the week in the second class.
10. Write a program that creates a ProfessorRating class consisting of
professor ID and three ratings. The three ratings are used to evaluate
easiness, helpfulness, and clarity. In a separate implementation class, allow
the user to enter the values. Call the constructor to create an instance of the
ProfessorRating class. Include appropriate properties. Do not allow
the ID to be changed after an object has been constructed. Provide a
method in the ProfessorRating class to compute and return the
overall rating average. Print all ratings and the average rating formatted with
no digits to the right of the decimal from the implementation class. Use a
single class method to enter all data.
Chapter5. Making Decisions
PROGRAMMING EXERCISES
1. Write an application that will enable you to display an aquarium’s pH level. The
pH is a measure of the aquarium water’s alkalinity and is typically given on a 0-14
scale. For most freshwater fish tanks, 7 is neutral. Tanks with a pH lower than 7
are considered acidic. Tanks with a pH higher than 7 are alkaline. Allow the user
to input the pH level number. Display a message indicating the health (i.e.,
acidic, neutral, or alkaline) of the aquarium.
2. Create a Month class that has a single data member of month number. Include
a member method that returns the name of the month and another method that
returns the number of days in the month. The ToString( ) method should
return the name and number of days. Write a second class to test your Month
class. The second class should allow the user to input a month number. Display
the name of the month associated with the number entered and the number of
days in that month. For this exercise, use 28 for February. If the user inputs an
invalid entry, display an appropriate message.
Write a program to calculate and display a person’s Body Mass Index (BMI).
BMI is an internationally used measure of obesity. Depending on where you live,
either use the Imperial BMI formula or the Metric Imperial Formula. Once the
BMI is calculated, display a message of the person’s status. Prompt the user for
both their weight and height. The BMI status categories, as recognized by the
U.S. Department of Health & Human Services, are shown in the table below:
BMI Weight Status
Below 18.5 Underweight
18.5 - 24.9 Normal
25 - 29.9 Overweight
30 & above Obese
4. Write a program that calculates the take-home pay for an employee. The two
types of employees are salaried and hourly. Allow the user to input the employee
first and last name, id, and type. If an employee is salaried, allow the user to input
the salary amount. If an employee is hourly, allow the user to input the hourly rate
and the number of hours clocked for the week. For hourly employees, overtime is
paid for hours over 40 at a rate of 1.5 of the base rate. For all employees’ takehome
pay, federal tax of 18% is deducted. A retirement contribution of 10% and a
Social Security tax rate of 6% should also be deducted. Use appropriate constants.
Design an object-oriented solution. Create a second class to test your design.
5. A large Internet merchandise provider determines its shipping charges based on
the number of items purchased. As the number increases, the shipping charges
proportionally decrease. This is done to encourage more purchases. If a single
item is purchased the shipping charge is $2.99. When customers purchase
between 2 and 5 items, they are charged the initial $2.99 for the first item and
then $1.99 per item for the remaining items. For customers who purchase more
than 5 items but less than 15, they are charged the initial $2.99 for the first item,
$1.99 per item for items 2 through 5, and $1.49 per item for the remaining items.
If they purchase 15 or more items, they are charged the initial $2.99 for the first
item, $1.99 per item for items 2 through 5, and $1.49 per item for items 6
through 14 and then just $0.99 per item for the remaining items. Allow the user
to enter the number of items purchased. Display the shipping charges.
6. Write an application that computes the area of a circle, rectangle, and cylinder.
Display a menu showing the three options. Allow users to input which figure
they want to see calculated. Based on the value inputted, prompt for appropriate
dimensions and perform the calculations using the following formulas:
Area of a circle = pi * radius2
Area of a rectangle = length * width
Surface area of a cylinder = 2 * pi * radius * height + 2 * pi * radius2
Write a modularized solution, which includes class methods for inputting data
and performing calculations.
Create an application with four classes. Three of the classes should contain data
and behavior characteristics for circle, rectangle, and cylinder. The fourth class
should allow the user to input a figure type from a menu of options. Prompt for
appropriate values based on the inputted figure type, instantiate an object of the
type entered, and display characteristics about the object.
8. Design a solution that prints the amount of profit an organization receives based
on it sales. The more sales documented, the larger the profit ratio. Allow the user
to input the total sales figure for the organization. Compute the profit based on
the following table. Display the sales and profit formatted with commas, decimals,
and a dollar symbol. Display the profit ratio formatted with a percent
symbol.
0 - $1000: 3%
$1000.01_$5000: 3.5%
$5000.01_$10000: 4%
over $10000: 4.5%
Be sure to design your solution so that all possible situations are accounted for and
tested. Use the decimal data type for your solution. What values did you enter and
test to verify your program’s correctness?
9. Two fuel stops, CanadianFuel and AmericanFuel, are positioned near the U.S.–
Canadian border. At the Canadian station, gas is sold by the liter. On the
American side, it is sold by the gallon. Write an application that allows the user
to input information from both stations and make a decision as to which station
offers the most economical fuel price. Test your application with 1.259 per liter
against 4.50 per gallon. Once the decision is made, display the equivalent prices.
10. Write a program that takes a decimal value between 1 and 10 and displays its
equivalent roman numeral value. Display an error message if the value entered is
outside of the acceptable range. Write a two class solution. The second class
should allow the user to input a test value.
Chapter6. Repeating Instructions
PROGRAMMING EXERCISES
1. Write a program that generates 1000 random numbers between 0 and 100000.
Display the number of odd values generated as well as the smallest and the largest
of values. Output should be displayed in a Windows message box.
2. Create an application that contains a loop to be used for input validation.
Valid entries are positive integers less than 100. Test your program with values
both less than and greater than the acceptable range as well as non-numeric
data. When the user is finished inputting data, display the number of valid and
invalid entries entered.
3. Write a program to calculate the average of all scores entered between 0 and
100. Use a sentinel-controlled loop variable to terminate the loop. After
values are entered and the average calculated, test the average to determine
whether an A, B, C, D, or F should be recorded. The scoring rubric is as
follows:
A—90-100; B—80-89; C—70-79; D—60-69; F < 60.
4. Create an application that determines the total due including sales tax and
shipping. Allow the user to input any number of item prices. Sales tax of
7.75% is charged against the total purchases. Shipping charges can be determined
based on the number of items purchased. Use the following chart to determine
the shipping charge. Display an itemized summary containing the total purchase
charge, number of items purchased, sales tax amount, shipping charge, and grand
total.
fewer than 3 items $3.50
3 to 6 items $5.00
7 to 10 items $7.00
11 to 15 items $9.00
more than 15 items $10.00
5. Write a program that allows the user to input any number of hexadecimal
characters. Sum the values and display the sum as a hexadecimal value. Within
the loop, convert each character entered to its decimal equivalent. Treat each
single inputted character as a separate value. Display the original hex value and
the corresponding decimal value. For example, if the user inputs F, 15 would be
displayed as the decimal equivalent. Use a sentinel value to control the loop.
After all values are entered, display the sum of values entered in both hexidecimal
and decimal notation.
6. Write an application that will enable a vendor to see what earnings he can expect
to make based on what percentage he marks up an item. Allow the user to input
the wholesale item price. In a tabular form, show the retail price of the item
marked up at 5%, 6%, 7%, 8%, 9% and 10%.
7. Write a program that produces a multiplication table with 25 rows of computations.
Allow the user to input the first and last base values for the
multiplication table. Display a column in the table beginning with the first
base inputted value. The last column should be the ending base value entered.
The first row should be for 1 times the beginning base, 1 times the (beginning
base value + 1), through 1 times the ending base value. The last row should
be for 25 times the beginning base, 25 times the (beginning base value + 1),
through 25 times the ending base value. Base values can range from 2 through
8. Display an error message if an invalid base is entered. Display an aesthetically
formatted multiplication table. An example of output produced when 2
and 8 are entered appears in Figure 6-22.
8. Prompt the user for the length of three line segments as integers. If the three lines
could form a triangle, print the integers and a message indicating they form a
triangle. Use a state-controlled loop to allow users to enter as many different
combinations as they want.
9. Write an application that calculates a student’s GPA on a 4.0 scale. Grade point
average (GPA) is calculated by dividing the total amount of grade points earned
by the total amount of credit hours attempted. For each hour, an A receives 4
grade points, a B receives 3 grade points, a C receives 2 grade points, and a D
receives 1 grade point.
Allow the user to input any number of courses and associated grades. Display
the number of hours earned and the GPA.
Chapter7. Arrays
PROGRAMMING EXERCISES
1. Write a program that reads data into an array of type int. Valid values are from 0
to 10. Your program should display how many valid values were inputted as well
as the number of invalid entries. Output a list of distinct valid entries and a count
of how many times that entry occurred.
Use the following test data:
172423846447
2. The Ion Realty Sales Corporation would like to have a listing of their sales over
the past few months. Write a program that accepts any number of monthly sales
amounts. Display the total of the values. Display a report showing each original
value entered and the percentage that value contributes to the total. You may
prompt the user for the number of values to be inputted.
3. Write a temperature application. Your solution should be a two class application
that has a one-dimensional array as a data member. The array stores temperatures
for any given week. Provide constructors for instantiating the class and methods
to return the highest temperature, lowest temperature, average temperature, and
the average temperature excluding the lowest temperature. Provide a method
that accepts as an argument a temperature and returns the number of days the
temperatures were below that value. Override the ToString( ) method to
return a listing of all the temperatures in three column format and the temperature
range for the given week. Write a second class to test your class.
4. Create three arrays of type double. Do a compile-time initialization and place
different values in two of the arrays. Write a program to store the product of the
two arrays in the third array. Produce a display using the MessageBox class
that shows the contents of all three arrays using a single line for an element from
all three arrays. For an added challenge, design your solution so that the two
original arrays have a different number of elements. Use 1 as the multiplier when
you produce the third array.
5. Write a program that allows the user to enter any number of names, last name
first. Using one of the predefined methods of the Array class, order the names
in ascending order. Display the results.
6. Write a two class application that has as a data member an array that can store
state
area codes. The class should have a member method that enables users to test an
area code to determine if the number is one of the area codes in the state exchange.
The member method should use one of the predefined methods of the Array
class and return true if the argument to the method is one of the state codes.
Override the ToString( ) method to return the full list of area codes with each
surrounded by parentheses. To test the class, store a list of state codes in a
onedimensional
array. Send that array as an argument to the class. Your application
should work with both an ordered list of area codes or an unordered list.
7. Write an application that allows the user to input monthly rainfall amounts for
one year. Calculate and display the average rainfall for the year. Display the
month name along with the rainfall amount and its variance from the mean.
8. Write a program that accepts any number of homework scores ranging in value
from 0 through 10. Prompt the user for a new score if they enter a value outside
of the specified range. Prompt the user for a new value if they enter an
alphabetic character. Store the values in an array. Calculate the average excluding
the lowest and highest scores. Display the average as well as the highest and
lowest scores that were discarded.
9. Write a program that allows any number of values between 0 and 10 to be
entered. When the user stops entering values, display a frequency distribution
bar chart. Use asterisks to show the number of times each value was entered. If a
given number is not entered, no asterisks should appear on that line. Your
application should display error messages if a value outside the acceptable range
is entered or if a non-numeric character is entered.
10. Write a two class solution that includes data members for the name of the
course, current enrollment, and maximum enrollment. Include an instance
method that returns the number of students that can still enroll in the course.
The ToString( ) method should return the name of the course, current
enrollment, and the number of open slots. Design your solution using parallel
arrays. Declare an array of class objects in your implementation class. Test your
application with the following data:
Chapter8. Advanced Colletions
PROGRAMMING EXERCISES
1. Write an application that creates and returns a one-dimensional array containing
all the elements in the two-dimensional array. Store the values in a row major
format. For testing purposes, you may do a compile-time initialization of a 12 x 5
two-dimensional array. Display both the two-dimensional and the one-dimensional
array. Be sure the values in the array are number aligned.
2. Write an application that will let you keep a tally of how well three salesmen are
performing selling five different products. You should use a two-dimensional
array to solve the problem. Allow the user to input any number of sales amounts.
Do a compile-time initialization of the salesperson’s names and product list.
Produce a report by salesman, showing the total sales per product.
3. Revise your solution for problem 2 so that you display the total sales per
salesman.
Place the first and last names for the salesmen in an array. Write your solution so
that any number of salesmen and any number of products can be displayed. When
you display your final output, print the salesman’s last name only, sales for each
product, and the final sales for the salesman. After you display the tables of sales,
display the largest sales figure indicating which salesman sold it and which product
was sold.
4. Write a two class application that creates a customer code to be placed on a
mailing label for a magazine. Allow the user to input their full name with the first
name entered first. Prompt them to separate their first and last name with a space.
Ask for their birthdate in the format of mm/dd/yyyy. Ask for the month
(number) they purchased a subscription and ask for their zip code. Your mailing
label should contain the last name, followed by their year of birth, the number of
characters in the full name, the first three characters of the month they purchased
the subscription, and the last two digits of their zip. The code for Bob Clocksom
born 01/22/1993, who purchased his subscription during the 10th month of the
year and lists 32226 as his zip code would be Clocksom9312Oct26.
5. Write a program that allows the user to enter any number of names. Your
prompt can inform the user to input their first name followed by a space and
last name. Order the names in ascending order and display the results with the last
name listed first, followed by a comma and then the first name. If a middle initial
is entered, it should follow the first name. Your solution should also take into
consideration that some users may only enter their last name (one name).
6. Write an application that creates a two-dimensional array. Allow the user to
input the size of the array (number of rows and number of columns). Fill the
array with random numbers between the 0 and 100. Search the array for the
largest value. Display the array values, numbers aligned, and the indexes where
the largest value is stored.
7. Write a program that creates a two-dimensional array with 10 rows and 2
columns. The first column should be filled with 10 random numbers between
0 and 100. The second column should contain the squared value of the element
found in column 1. Using the Show( ) method of the MessageBox class,
display a table.
8. reAay ouyay aay hizway ithway igPay atin?Lay? (Translated: ‘‘Are you a whiz
with Pig Latin?’’) Write a program that converts an English phrase into a pseudoPig Latin phrase (that is Pig Latin that doesn’t follow all the Pig Latin syntax
rules). Use predefined methods of the Array and string classes to do the work.
For simplicity in your conversion, place the first letter as the last character in the
word and prefix the characters ‘‘ay’’ onto the end. For example, the word
‘‘example’’ would become ‘‘xampleeay’’, and ‘‘method’’ would become ‘‘ethodmay.’’
Allow the user to input the English phrase. After converting it, display the
new Pig Latin phrase.
9. Write an application that displays revenue generated for exercise classes at the
Tappan
Gym. The gym offers two types of exercise classes, zumba and spinning, six days
per
week, four times per day. Zumba is offered at 1, 3, 5, and 7 p.m.; spinning is offered
at 2, 4, 6, and 8 p.m. When attendees sign up, they agree to pay $4.00 per class for
zumba and $5.00 for spinning. Produce a table displaying the number of attendees
per time slot. Display a row and column of totals showing the total number of
attendees by day and also time period. Also include a column showing the revenue
generated each day and the overall revenue per type of exercise. Do a compile-time
initialization of your data structures using data from the following table.
10. Write an application that enables you to randomly record water depths for
5 different locations at 0700 (7 a.m.), 1200 (noon), 1700 (5 p.m.), and 2100
(9 p.m.). The locations are Surf City, Solomons, Hilton Head, Miami, and
Savannah. For ease of input, you may want to code the locations (i.e., Surf
City = 1, Solomons = 2, etc.) and code the time (i.e., 0700 = 1, 1200 = 2, etc.).
If the same location and time are entered more than one time, store the last
value entered into the array. After the data is entered, display the average depth
at each location and the average depth by time period.
Chapter 9. Introduction to Windows Programming
PROGRAMMING EXERCISES
1. Create a Windows application that can be used to input a user’s name. Include an
appropriate label indicator for the name and a textbox for the input entry.
A button labeled OK should retrieve and display the value entered on another
label positioned near the bottom of the form. The font color for all objects should
be yellow. Change the background color of the form to an appropriate one to use
with your yellow text. Change the Font property to a font of your choice.
The size of the font for all objects except the Button should be at least 14 points.
The Button font should be 16 points. Add a title caption of ‘‘Name Retrieval
App’’ to the form. Initially clear the text from the label that will display your final
answer. When the OK button is pressed, retrieve the name and concatenate that
value with a Congratulatory message. For example, you might display,
‘‘Congratulations,
Brenda Lewis, you retrieved the data!’’, if your name was Brenda
Lewis. Align the controls so they are aesthetically pleasing. Be sure to change the
default names of all controls involved in program statements.
2. Create a Windows application that can be used to change the form color. Your
form background color should initially be blue. Provide at least two buttons with
two different color choices. Change the font style and size on the buttons. Align
the buttons so that they are in the center of the form. The buttons should be the
same size. Add event handlers for the buttons so that when the user clicks the
button, the form changes color, and a message box is displayed alerting the user as
to what color the form is. Be sure to name any controls used in program
statements prior to registering your event. Change the default title bar text.
Hint: This exercise may require you to do some research. You may want to review
the code placed in the .Designer.cs file after you set the form’s initial color.
3. Create a Windows application that contains two textboxes (with labels) and one
button. The textboxes should be used to allow the user to input the x- and
ycoordinates
to indicate where the form should be positioned. When the user
clicks the button, the window should be moved to that new point. Be sure to
label the textboxes appropriately. Change the form’s background color. Add a
title caption to the form. Include a heading above the textboxes and button.
Enlarge the size of the font. Only allow positive integers to be used for the
coordinates.
Hint: One easy way to do this is to set the location using an instance of the
Point class when the user clicks the button. To do this, you could allow the
user to input values for both x and y into two separate textbox objects. After
being retrieved, they would need to be parsed or converted to their integer
equivalent. Then use the numeric values for x and y to set the location by typing
Location = new Point(x,y);.
4. Create a Trip Calculator Windows application that can be used to determine
miles per gallon for a given trip. Set the Form object properties of Name,
ForeColor, BackColor, Size, Location, Text, and AcceptButton. The
form should contain labels and textboxes to allow the user to input trip destination,
miles traveled, and gallons of gas consumed. Two buttons should be placed
on the form. Name all objects used in program statements. When the user clicks
the button that performs the calculations, display in a label the miles per gallon
for that trip. The second button should be used to reset or clear textbox entries.
5. Create a Windows application that contains two textboxes and two buttons. The
textboxes should be used to allow the user to input two positive numeric values.
The buttons should be labeled Add and Multiply. Create event-handler methods
that retrieve the values, perform the calculations, and display the result of the
calculations on a label. The result label should initially be set to be invisible with a
font color of yellow. If invalid data is entered, change the font color to red on the
result label and display a message saying ‘‘Value must be numeric and > 0.’’
When the final answer is displayed, the font color should be yellow. Additional
labels will be needed for the textboxes captions. Do not allow non-numeric
characters to be entered. Invoke the TryParse( ) method to retrieve the
values. All controls involved in program statements should be named. Right
justify values in the textbox.
6. Create a Windows application that contains a textbox for a person’s name. Plan
that the user may enter only first and last name, or they may enter first, middle,
and last names. Include labels to store first, middle, and last names. A button
should be included. When the button is clicked, retrieve the full name, separate it
into first, middle (if present), and last names and then display the labeled name
values.
7. Create a Windows application that contains two textboxes and three buttons. One
of the textboxes and one of the buttons are initially invisible. The first textbox
should be used to input a password. The textbox should be masked to some
character of your choosing so that the characters entered by the user are not seen
on the screen. When the user clicks the first button, the second textbox and button
should be displayed with a prompt asking the user to reenter his or her password.
Set the focus to the second password textbox. Now, when the user clicks the
second button, have the application compare the values entered to make sure they
are the same. Display an appropriate message indicating whether they are the
same.
Once the check is made, display a third button that resets the form.
8. Create a Windows application that can be used to determine distance traveled
given speed and time. Recall that distance = speed * time. Provide textboxes for
time and speed and a button to calculate to the distance. Be sure only numeric
data is able to be entered into the textboxes. Experiment with the controls’
properties. Spend time with your design so that your GUI is very user friendly
and looks nice.
9. Create a Windows application that functions like a banking account register.
Separate the business logic from the presentation layer. The graphical user
interface should allow the user to input the account name, number, and balance.
Provide textbox objects for withdrawals and deposits. A button should be
available for clicking to process withdrawal and deposit transactions showing
the new balance.
10. Create the higher/lower guessing game using a graphical user interface. Allow
users to keep guessing until they guess the number. Keep a count of the number
of guesses. Choose two colors for your game: one should be used to indicate
that the value the users guessed is higher than the target; the other is used to
indicate that the value the users guessed is lower than the target. With each new
guess, show the guess count and change the form color based on whether the
guess is higher than the target or lower. When they hit the target, display a
message on a label indicating the number of guesses it took. Several approaches
can be used to seed the target: one is to generate a random number by
constructing an object of the Random class. For example, the following
stores a random whole number between 0 and 100 in target:
Random r = new Random();
int target = r.Next(0,101);
Chapter10. Programming based on events
PROGRAMMING EXERCISES
1. Create a graphical user interface that allows the users to enter personal
information such as their names, e-mail addresses, and phone numbers.
Include a menu that provides a minimum of four features. The first displays
the information entered by the user in a message box. The second clears the
entries so that new values can be entered, the third menu option displays
information about the application such as who developed it and what version
it is. Another menu option closes the application. Be creative and be sure to
produce an aesthetically pleasing design using options from the Format menu
if you are using Visual Studio.
2. Create a Windows application that can be used as a sign-up sheet for ski
equipment for the Flyers Sports Club. The club has ski equipment that it
makes available to members at a minimal charge. In an attempt to determine
what type of equipment members might need for an upcoming trip, they
have asked you to design and implement an equipment-needs form. Include
CheckBox objects that allow users to select the type of gear they will need
to purchase for the trip. Include selections of snow gloves, skis, goggles,
earmuffs, and other items you feel are appropriate. Include at least one picture
image on your application. After all selections are made, display a message
indicating what items have been selected. You will probably want to include
menu options to display and clear the order for the next user. Also include an
option that enables the user to exit the application.
3. Create a graphical user interface that can be used by a community group to
enable youths to sign up for different sporting events. Include radio buttons
with five different sport names. Only one of these should be selectable.
Program your event-handler method so that a message is displayed with each
selection of a different sport. For example, if one of the sports is skiing, the
message might say, ‘‘Bring warm clothes!’’ Also include a PictureBox
object on the form to display pictures of the sporting event. When the
particular sport is selected, make the PictureBox visible. You can find free
graphics on the Internet to use in your application. Hint: One way to
associate a file to the PictureBox control is to Import an image from the
Image property.
4. Create a Message Displayer that has one ComboBox object with a list of at
least four of your favorite sayings. In your design, include the capability of
letting users enter their own sayings. When a selection is made or a new entry
is typed, display the selection on a Label object on your form. Add a
menu to the application that includes at least the menu options of Format and
Help. Under the Format selection, include options of Font and Color. Wire
the Font and Color options to the Windows predefined Font and Color
dialog boxes so that when their values are changed, the text in the Label
object displaying the saying is changed.
5. Create an order form that allows bags to be purchased. There are six
different types: full decorative, beaded, pirate design, fringed, leather, and
plain. Create a ListBox object for the different styles. Include a
ComboBox for quantity. Quantities up to 10 should be provided. After
the user makes a selection, display a message indicating which selection
was made. Include an option to clear selections. Provide appropriate
error messages when selections are not made.
6. Add to the application in Exercise 5 by including a control that allows the user
to determine the type of shipping they desire. Include a set of radio buttons that
contain shipping options of overnight, three day, and standard. Add the price
for each bag to the listbox selection as follows: full decorative—$50.00;
beaded—$45.00; pirate design—$40.00; fringed—$25.00; leather—$80.00;
and plain—$20.00. Display the items sorted. Using methods of the string class,
retrieve and use the price from the listbox. The shipping charges are based on
the total purchase. The following percentages are used: overnight—10%; three
day—7%; and standard—5%. Display in a message box the shipping charge
along with the selection, quantity, and total cost.
7. The computer club is selling T-shirts. Create an attractive user interface that
allows users to select sizes (S, M, L, and XL) and quantity. Which controls
would be most appropriate? Remember, the fewer keystrokes required of
the user the better. Display the selections made by the user with the Process
menu option. Include an option to exit the application.
8. Add to your solution in Exercise 7 by including two more sizes, XSmall and
XXLarge. Add statements that process the order by calculating the total cost.
Each shirt is $16 except the XSmall and XXLarge; their specialty prices are
$20.00 each. Allow users to purchase different sizes on the same order. Include
an ‘‘Add to Cart’’ option from the Process menu that enables the user to add
multiple selections to the order. Display the total cost for each selection and the
final cost for the order. Include a Help menu option that displays instructions.
9. Create aWindows application for purchasing floor covering. Allow the length
and width (feet and inches) of a room to be entered. Be sure to include program
statements that will keep your program from crashing if they enter nonnumeric
characters for the room dimensions. Have a control that displays
different types along with the prices of floor covering. Using the tab control,
provide selections such as Hardwood, Carpet, and Laminate. On each tab allow
the user to select a type and price. Include, for example, options like Oak,
Maple, Walnut, and Cherry Hardwood floors with prices such as $34.95 per
square yard for Oak and $41.95 per square yard for Cherry. After the users enter
their room dimensions and selects the floor covering and price, display the total
cost to cover the room. Include an option to clear selections. Place both the
type of floor covering and the price in a single control, such as a ComboBox
and use string manipulation techniques to strip the price out of the string.
10. Create an application for a Pizza Delivery Company. You might check out
the graphical user interface shown in Figure 10-21. Your solution does not
need to resemble this one; however, it might give you some ideas. You must
provide a place for the user to enter their contact information (i.e., address,
phone number, and e-mail) and some of the contact information should be
displayed when an order is placed.
Your application should have a picture logo and company name. Provide
selections such as Small,Medium, and Large for size. Allow users to select from
at least a dozen items to place on their pizza. You might consider offering
different types of sauce (i.e., tomato, pesto, or no sauce), different types of
crust, different specialty types of pizza (Supreme, Veggie, etc.). BE
CREATIVE! You can also sell wings, bread sticks, chicken strips, or
something else of your choosing. Consider offering beverages.
You must display the price for the order and allow the user to change their
mind while they are ordering and reset the order form. Experiment,
explore, change properties, and then review the .Designer.cs file.
Chapter11. Advanced OO programming features
PROGRAMMING EXERCISES
1. Create a base class to hold information about sporting teams on campus. It
should not be possible to instantiate the class. Include common characteristics
such as primary coach and type of sport. Define properties, ToString( )
methods, and a minimum of one virtual method. The ToString( )
method should return the name of the sport and coach.
2. Select two types of sporting teams and define subclasses for them. These
classes should inherit from a base team class such as that created in Exercise
1. Include unique characteristics about the sport. For example, for a sporting
team such as a tennis team, the field location and/or the person to contact to
restring rackets may be of interest. Be sure to implement any virtual
methods included in the base class. Provide ToString( ) methods in
both subclasses that invokes the ToString( ) method in the base class
and adds unique characteristics about the individual team to the return value.
3. Add a new project to the solution you designed for Exercises 1 and 2. The
new project should test your designs of the base team class and individual
sporting team subclasses. Your class can be a console or Windows application.
One approach would be to instantiate objects of both teams when the
program launches and then invoke methods and properties to retrieve and
display data about both teams. Be sure to retrieve data from the base class as
well as the subclasses.
4. Define an interface for the sporting team relating to budgeting. Any
teams that implement the interface must provide details about how they are
budgeted. Modify your design for Exercises 1 through 3 to implement the
interface for both teams.
5. Create a ticket reservation class for issuing tickets to on-campus events
such as plays, musicals, and home basketball games. Design the ticket class
to be abstract. Create subclasses for at least three different types of events.
Determine unique characteristics for each of the events. Define a client
application to test your class designs.
6. Create a base class to store characteristics about a loan. Include customer
details in the Loan base class such as name, loan number, and amount of loan.
Define subclasses of auto loan and home loan. Include unique characteristics
in the derived classes. For example you might include details about the
specific auto in the auto loan class and details about the home in the home
loan class. Create a presentation class to test your design by displaying
information about both types of loans.
7. Create a base class for a banking account. Decide what characteristics are
common for checking and saving accounts and include these characteristics in
the base class. Define subclasses for checking and savings. In your design,
do not allow the banking base account to be instantiated—only the checking
and saving subclasses. Include a presentation class to test your design.
8. Create a base class titled ReadingMaterial. Include subclasses of Book
and Magazine. Define an interface called IPrintable that has a
method describing how it is available as a hard copy form of publication.
Design your classes so that common characteristics are placed in the
ReadingMaterial class. Include a presentation class to test your
design.
9. Define an application to include classes for Student, GraduateStudent,
and UndergraduateStudent. Create .DLL files for the three classes.
Include characteristics in the Student class that are common to GraduateStudent
and UndergraduateStudent students. All three classes should
override the ToString( ) method. GraduateStudent should include
a data field for the type of undergraduate degree awarded, such as B.A.
or B.S., and the location of the institution that awarded the degree.
UndergraduateStudent should include classification (for example,
freshman, sophomore), and parent or guardian name and address. Create a
presentation class that instantiates student objects and enables details to be
displayed on the form about individual students to test your design.
10. Create a housing application for a property manager. Include a base class
named Housing. Include data characteristics such as address and year built.
Include a virtual method that returns the total projected rental amount.
Define an interface named IUnits that has a method that returns the
number of units. The MultiUnit class should implement this interface.
Create subclasses of MultiUnit and SingleFamily. SingleFamily
should include characteristics such as size in square feet and availability of
garage. MultiUnit might include characteristics such as the number of
units. Create .DLL components for the housing classes. Define a presentation
class to test your design.
Chapter13. Working with files
PROGRAMMING EXERCISES
1. Write a C# program that prints the current directory and the name and size
of all files that are stored in the directory. Your display should be aesthetically
pleasing (numbers should be aligned and formatted).
2. Use Notepad to place 20 integer values in a text file. Write a C# program to
retrieve the values from the text file. Display the number of values processed
and the average of the values, formatted with two decimal places. Also display
the smallest value and the largest value. Hint: To simplify the problem, the
values can each be placed on separate lines.
3. Write a program that enables the user to input name, address and local phone
number, including area code. The phone number should be entered in a
format to include dashes between the numbers (i.e. xxx-xxx-xxxx). Store the
values in a text file. Surround the phone number with asterisks and store only
the numbers for the phone number. Do not store the hypen or dash in the file
with the phone number. Include appropriate exception-handling techniques
in your solution. Display a message indicating the data was stored properly.
Use Notepad to view the contents.
4. Write a program that displays a graphical user interface (Windows form) that
allows multiple names, e-mail addresses, and local phone numbers to be
entered. Store the values in a text file. Retrieve and store just the numbers
for the phone number. Use separate lines for each person’s data. Include
appropriate exception-handling techniques in your solution.
5. Write a program that stores 50 random numbers in a file. The random numbers
should be positive with the largest value being 1000. Store five numbers per
line and 10 different lines. Use the Random class to generate the values.
Include appropriate exception-handling techniques in your solution.
6. Write a program that retrieves the values stored in a text file. The file should
contain 10 different rows of data with five values per line. Display the largest
and smallest value from each line. Include appropriate exception-handling
techniques in your solution. Hint: If you completed Programming Exercise
#5, use the text file created by that exercise.
7. Write an application that retrieves a student name and three scores per line from
a text file. Process the values by calculating the average of the scores per student.
Write the name and average to a different text file. Display what is being written
to the new file. Test your application with a minimum of eight records in the
original file. Hint: You might consider adding delimiters between the data
values in the original text file to simplify retrieving and processing the data.
8. Write a program that produces a report showing the number of students
who can still enroll in given classes. Test your solution by retrieving the data
from a text file that you create using a text editor, such as Notepad. Some
sample data follows. Include the name of the class, current enrollment, and
maximum enrollment.
Classes should not be oversubscribed. Define a custom exception class for this
problem so that an exception is thrown if the current enrollment exceeds the
maximum enrollment by more than three students. When this unexpected
condition occurs, halt the program and display a message indicating which
course is overenrolled.
9. Write a graphical user application that accepts employee data to include
employee name, number, pay rate, and number of hours worked. Pay is to
be computed as follows: Hours over 40 receive time-and-a-half pay. Store
the employee name, number, and the total amount of pay (prior to deductions)
in a text file. Close the file and then, in the same application, retrieve
the stored values and display the employee name and the formatted total pay.
Your application should allow the user to browse to the file location for
saving and retrieving the file.
10. Allow the user to enter multiple sets of five numbers. Store the numbers in a
binary file. For each set of values, store the average of the numbers prior to
storing the next set of values. For example, if the user entered 27 78 120
111 67 as the first set of values, the first values written to the binary file would
be 27 78 120 111 67 80.6. For an extra challenge, close the file, reopen it,
and display the values from the file in a listbox control.
Chapter14. Working with databases
PROGRAMMING EXERCISES
1. Create a small Family database with one table to include data about members
of your family. Include data fields such as family member number, first name,
last name, type of relationship, hometown, and age. You can be creative with
the family member number or use the autogenerated number from the
database. It must be a unique value; each member of your family must have
a different family member number. Populate the database with members of
your family. Be sure to include data about yourself in the table. Place at least
10 records in your database table, even if it is necessary to make up information.
The type of database (SQL Server or Access) will be determined by your
instructor. Write a C# program to display all of the data that appears in the
database table on a data grid.
2. Using the database created in Programming Exercise 1, modify your solution
to only display the names of the members of your family in a data grid. Dock
the grid so that it fills the form. Change the color of the data grid columns,
increase the size of the font, choose appropriate headings for your columns,
and format the grid control so that it is professionally aesthetically appealing.
3. Using the database created in Programming Exercise 1, write a C# program
to only display the names of the members of your family who are over 21
years of age. Display their name, age, and relationship to you. Provide an
appropriate heading for the displayed items on the form and format the grid
control.
4. Using the database created in Programming Exercise 1, write a C# program
to display the names and type of relationship of the members of your family
who live in the same hometown as you do. Do not include yourself in the
query result. It may be necessary for you to go back into your database and
modify some of the records for testing purposes. Display your results in
textboxes as opposed to a data grid. Provide appropriate headings and labels.
5. Create a small BankAccount database with one Account table. The Account
table should have fields for account number, customer last and first names,
and current balance. The type of database (SQL Server or Access) will be
determined by your instructor. Populate the table with 8-10 records. Design
a user interface that will enable you to display all customers.
6. Create a small Sports database with two tables: Team and Athlete. The Team
table should include fields for the type of team (e.g., basketball), coach’s name
(both last and first), and the season the sport is most active (S for spring, F for
Fall, or B for both). The Athlete table should include fields for student
number, student first and last names, and type of sport. Use the same
identifier for type of sport in both tables to enable the tables to be related
and linked. Populate the tables with sporting teams from your school.
The type of database (SQL Server or Access) will be determined by your
instructor. Write a C# program that displays information about each team,
including the names of the athletes.
7. Create a Books database to include two tables: BookTable and
CourseBookTable. The BookTable table should have fields for ISBN number,
title, copyright date, primary author, publisher, and number of pages. The
CourseBookTable table should have fields for course number and ISBN.
Populate the tables with books in your current collection, including the books
you are using for your classes. Books that are not associated with a specific
course can be placed in the table with a FUN course number. The type of
database (SQL Server or Access) will be determined by your instructor.Write a
C# program to display the course number (or FUN) and the ISBN and name of
the book on the same screen.
8. Create a small database to include customer data. Include the customer
numbers, customer names, and customer directional location. Place at least
eight records in the database. For the customer directional location field, use
the designations of N for North, S for South, and so on. The type of database
(SQL Server or Access) will be determined by your instructor. Write a C#
program to only display the names of all customers. Do not use the database
configuration wizard for this application; write program statements.
9. Using the database created in Programming Exercise 8, write a C# program
to display the customer number and name in a data grid. Format the grid
control so that it is professionally aesthetically appealing. Allow the user to
add records to the database. If your designed solution involves the use of a
disconnected database, post the changes back to the live database. Be sure to
check the database records to make sure the changes have been made. For an
added challenge, write program statements, as opposed to using the database
configuration tools wizard.
10. Using the database created in Programming Exercise 8, write a C# program
that retrieves records from the customer table and displays them in a grid
control. Allow the user to select an entry from the data grid and display the
values selected in text boxes with appropriate labels. Display the corresponding
customer area for the one selected as full text (i.e., display West instead
of the W, which appears in the database). For an added challenge, write
program statements, as opposed to using the database configuration tools
wizard.
Chapter15. Web-based applications
PROGRAMMING EXERCISES
1. Create a Web application that enables users to select from a Calendar control
object the date of their next exam. Using program statements, retrieve their
selection and then display the date along with an appropriate message. If they
select a date in the past, display a message and allow them to re-enter a new date.
Change background and foreground colors for the Web page.
2. The computer club is selling T-shirts. Create a Web site that allows users to enter
their first and last names, phone number and e-mail address. Allow users to select
sizes (S, M, L, XL, and XXL) and quantity. Add statements that process the order
by calculating the total cost. All shirts except the XXL are $26; the XXL shirt is
$30. Retrieve and display the name of the customer placing the order. Display
the total cost of their selection including 7% sales tax.
3. Using Web Forms controls, create a Web application to store a user’s To Do List.
Include two TextBox objects, a Button object, and a ListBox object.
Allow the user to input their name in one textbox and To Do tasks into the other
TextBox. Use those values to populate the ListBox object. Allow the user to
make a selection for which item to tackle next from the list. Display their name
and the selection on a Label object and then remove that item from the
ListBox.
4. The computer club has decided to take a field trip to the hometown of one of the
members during spring vacation. To determine the destination, each member has
been charged with creating a Web page to highlight the features of his hometown.
Create a Web application using the ASP.NET Web Forms site template
that contains details about your hometown. If you would prefer that the members
visit another location, you may choose a different locale. Set the properties
on the form for the controls so the form is aesthetically pleasing. Be sure to
change both background and foreground colors, font size, and type.
5. Create a similar application to what you developed in Exercise 4 using the
ASP.NET Empty Web Site Template. Include an HTML server control that
causes a message to be displayed (on a Label object) when the user clicks a
button. The message should include additional details about the locale.
6. Create a dynamic Web site that functions like a calculator. Add features for
addition, subtraction, multiplication, division, modulation, and so on.
7. Create a Web application that enables the user to enter first name, last name,
and e-mail address. Accept those values and store them in a text file. Allow the
user to input the path where the file should be stored. After retrieving the
values from the user, display on the Web page both the full file path (including
the name of the file) and all values stored in the file. Confirm that the values are
written to the file.
8. Create a Web site that retrieves and displays the current department chairs
from a database. The StudentDataBase.accdb Access database used with
examples
in this book includes a major table that stores the major id, major name,
department chair, and the department phone number. Create a Web site that
references this table, or a database table that you create with similar fields.
Display on the Web site the name of the major and the chair for the department.
Enhance the site by changing background and foreground colors of the
page and the grid storing the data.
9. Create a smart device currency converter application. Select two markets, such
as U.S. dollar and the Euro. Research the current equivalents and use those
values for your calculations. Include an image control and a control that enables
the user to input a value. Display the formatted value entered along with its
converted counterpart and the exchange rate.
10. Create a smart device application that allows users to input their names, year of
birth, and student IDs. Create and display a new security hash value. The new
value should consist of the first initial of their names followed by the identification
number and the last two digits of their birth year. Append onto the end of
those values the total number of characters in their names. For example, if the
name Sofyia ElKomaria, birth year 1994, and the ID 12467 is entered, the new
identification number would be S124679416. Create an attractive screen with
an image control in the background.