This set of C Multiple Choice Questions & Answers (MCQs) focuses on “For Loops – 2”.
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>void main()
{double k = 0;
for (k = 0.0; k < 3.0; k++);
printf("%lf", k);
}
a) 2.000000
b) 4.000000
c) 3.000000
d) Run time error
View Answer
Explanation: None.
2. What will be the output of the following C code?
#include <stdio.h>void main()
{int k;
for (k = -3; k < -5; k++)
printf("Hello");
}
a) Hello
b) Infinite hello
c) Run time error
d) Nothing
View Answer
Explanation: None.
3. What will be the output of the following C code?
#include <stdio.h>int main()
{int i = 0;
for (; ; ;)
printf("In for loop\n");
printf("After loop\n");
}
a) Compile time error
b) Infinite loop
c) After loop
d) Undefined behaviour
View Answer
Explanation: None.
4. What will be the output of the following C code?
#include <stdio.h>int main()
{int i = 0;
for (i++; i == 1; i = 2)
printf("In for loop ");
printf("After loop\n");
}
a) In for loop after loop
b) After loop
c) Compile time error
d) Undefined behaviour
View Answer
Explanation: None.
5. What will be the output of the following C code?
#include <stdio.h>int main()
{int i = 0;
for (foo(); i == 1; i = 2)
printf("In for loop\n");
printf("After loop\n");
}int foo()
{return 1;
}
a) After loop
b) In for loop after loop
c) Compile time error
d) Infinite loop
View Answer
Explanation: None.
6. What will be the output of the following C code?
#include <stdio.h>int main()
{int *p = NULL;
for (foo(); p; p = 0)
printf("In for loop\n");
printf("After loop\n");
}
a) In for loop after loop
b) Compile time error
c) Infinite loop
d) Depends on the value of NULL
View Answer
Explanation: None.
7. What will be the output of the following C code?
#include <stdio.h>int main()
{for (int i = 0;i < 1; i++)
printf("In for loop\n");
}
a) Compile time error
b) In for loop
c) Depends on the standard compiler implements
d) Run time error
View Answer
Explanation: None.
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