Prerequisite : Loops in C
Q.1 What is the output of this program?
Options
a)A B C D E
A B C D E
A B C D E
A B C D E
A B C D E
b)A B C D
A B C D
A B C D
A B C D
c)A B C D
A B C
A B
A
d)A B C D E
A B C D
A B C
A B
A
ans:- d
Explanation :- inner loop iterates for value less than equal to i, thus printing
A B C D E
A B C D
A B C
A B
A
Q.2 What is the output of this program?
Options
a) After loop counter=1
b) 1,
After loop counter=2
c) 1,
After loop counter=1
d) After loop counter=2
ans:- b
Explanation :- do while is an exit controlled loop, here loop body executed first, then condition will be checked.
Q.3 What is the output of this program?
Options
a)After loop counter=1
b)1,
After loop counter=2
c)1,
After loop counter=1
d)After loop counter=2
ans:- a
Explanation :- since while is an entry controlled loop so, here condition will be checked first.
Q.4 What is the output of this program?
Options
a)Hello
b)Hello Hello Hello Hello .......
c)Hello Hello Hello Hello Hello Hello Hello Hello Hello Hello
d)Hello Hello Hello Hello Hello Hello Hello Hello Hello Hello Hello
ans:- d
Explanation :- since post decrement operator is used so value is decremented after expression loopvar - - is evaluated. Thus, Hello is printed 11 times.
Q.5 What is the output of this program?
Options
a)compilation error
b)HelloHello ... 10 times
c)HelloHello ... 11 times
d)Hello
ans:- a
Explanation :- Error: lvalue required as increment operand. It is a compile time error.
