Pascal Computer Programming !" (Evaluation Tree) . # $ . % &'( )" a) 1-2/3/4*5 b) Flag or ((Y+Z) >= (X-Z)) c) 10-1*20/(30+1)/2 / 34" (5 46 5 47 8 4, 9 5 5 : &2+ x1,y1,x2,y2 &6&" 8 &, /0 A /!A /6&, . CRT / ' !0 . 20 -. /0 1 &2 + , * , ; /<=> 5 ?@A . % =! ; " D?C 55 & 8, B (10,10,100,100) 5 (1,1,80,25)5 (2,2,79,24) 5 (5,5,40,20) : 42J 4A /4" 4 D . /4 &4 8 , Gwriteln &! K5 46 /" : 2J D. I. &'( /H 6 65 G8 , & 7 ? F % =! N 20 " I . % A L'3" M ) K5 6 P Q /<=> GK5 6 ; ?F , , / &O . "; $! &" ?<" E x1 x2 y1 y2 5 4 U : &4 L'34" V 4W . 24A 4" U . : ( )U2" a) I:=0; K:=12.5/I; b) IF P:=1 Then K:=2 Else K:=3; ?F T U H [" 0 K S" R 0 U ) U Z& G - D X <Y, Pascal Computer Programming c) Sum:=0; N:=50; Count:=0; Average:=0; While N>=0 Do Sum:=Sum + N; N:=N-1; Count:=Count+1; Average := Sum /N; 9 F . ; 65 . /1 )" GK @ Q . % =! e x ?> T 5 /" 7 : 9 W ex = 1+ x + 55 x /0 1 &2 8 &, / & ]" EXP 8 , 9 F x 2 x3 xn + + ... + /U 2! 3! n! ex / <" /" \ & / <" : 2
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