Here is a listing of online C test questions on “While Loops” along with answers, explanations and/or solutions:
1. What is the output of this 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 is the output of this C code?
#include <stdio.h>
int main()
{
do
printf("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 is the output of this 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 below 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 below 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 is the output of this 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 is the output of this 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 is the output of this 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.
Sanfoundry Global Education & Learning Series – C Programming Language.
Here’s the list of Best Reference Books in C Programming Language.
To practice all features of C programming language, here is complete set of 1000+ Multiple Choice Questions and Answers on C.