This set of C Multiple Choice Questions & Answers (MCQs) focuses on “While Loops – 1”.
Pre-requisite for this C MCQ set: Advanced C Programming Video Tutorial.
1. What will be the output of the following C code?
#include <stdio.h>int main()
{while ()
printf("In while loop ");
printf("After loop\n");
}
a) In while loop after loop
b) After loop
c) Compile time error
d) Infinite loop
View Answer
Explanation: None.
2. What will be the output of the following C code?
#include <stdio.h>int main()
{doprintf("In while loop ");
while (0);
printf("After loop\n");
}
a) In while loop
b)
In while loop after loop
c) After loop
d) Infinite loop
View Answer
Explanation: None.
3. What will be the output of the following C code?
#include <stdio.h>int main()
{int i = 0;
do {
i++;printf("In while loop\n");
} while (i < 3);
}
a)
In while loop In while loop In while loop
b)
In while loop In while loop
c) Depends on the compiler
d) Compile time error
View Answer
Explanation: None.
4. How many times i value is checked in the following C code?
#include <stdio.h>int main()
{int i = 0;
do {
i++;printf("in while loop\n");
} while (i < 3);
}
a) 2
b) 3
c) 4
d) 1
View Answer
Explanation: None.
5. How many times i value is checked in the following C code?
#include <stdio.h>int main()
{int i = 0;
while (i < 3)
i++;printf("In while loop\n");
}
a) 2
b) 3
c) 4
d) 1
View Answer
Explanation: None.
6. What will be the output of the following C code?
#include <stdio.h>void main()
{int i = 2;
do{printf("Hi");
} while (i < 2)
}
a) Compile time error
b) Hi Hi
c) Hi
d) Varies
View Answer
Explanation: None.
7. What will be the output of the following C code?
#include <stdio.h>void main()
{int i = 0;
while (++i)
{printf("H");
}}
a) H
b) H is printed infinite times
c) Compile time error
d) Varies
View Answer
Explanation: None.
8. What will be the output of the following C code?
#include <stdio.h>void main()
{int i = 0;
do{printf("Hello");
} while (i != 0);
}
a) Nothing
b) H is printed infinite times
c) Hello
d) Run time error
View Answer
Explanation: None.
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