[Mr.Ahmad]

 
Answer the following exercises 
1. Evaluate the following expressions using the relational operators 
and the ASCII Collating Sequence (express your answer with true 
or false). 
 
 
Expression Expression Value 
 
’ ’ <’a’ 
Answer : True
 
’R’ > ’t’ 
Answer : False
 
’+’ > ’*’ 
Answer : False 
 
’6’ >= ’>’ 
Answer : False
 
!(’A’ > ’B’) 
Answer : True
 
!(6 <= 7) 
Answer : False
 
(14 >= 5 ) && (’A’ < ’B’) 
Answer : True
 
(24 >=35) && ( 7 < 9 ) 
Answer : False
 
(’A’ <+ ’a’) || ( 7 != 7 ) 
Answer : True
 
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2. Suppose we have the following declarations: 
bool found = true ; 
bool flag = false ; 
int num = 1 ; 
double x = 3.4 ; 
double y = 3.4 ; 
int a = 5 , b = 8 ; 
int n = 20 ; 
char ch = ’B’; 
Consider the flowing expressions state the answer for each one 
(Express your answers with true or false). 
 
 
Expression Answer 
 
!found 
Answer : False
 
x > 4.0 
Answer : False
 
!( found && ( x >= 0 ) 
Answer : False
 
x + y <= 20.5 
Answer : True
 
(’A’<= ch && ch <= ’Z’ 
Answer : True
 
( a + 2 <= b ) && !flag 
Answer : True
 
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3. Evaluate the following expressions. Express your answer with tr or false. 
 
 
Expression E
 
 
(17<4*3+5)|| (8*2 == 4*4)&& !(3 + 3== 6) 
Answer : False
 
(6*3 == 36/2)||(13<3*3+4)&& !(6-2 < 5) 
Answer : True
 
2 % 4 * 5 && 5 % 4 * b 
Answer : True
 
6 * 2 == 4*3 
Answer : True
 
5 % 2 * 4 > 5 || 4 % 2 * 5 < 7 
Answer : True
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