C MCQs - 3

What will be the output of the following code?

#include <stdio.h>
int main() {
    int x = 5;
    int y = 10;
    int z = (x > y) ? x : y;
    printf("%d\n", z);
    return 0;
}
 

a) 5
b) 10
c) 15
d) Compiler error

Answer: b) 10

Which keyword is used to terminate the execution of a function in C?

a) stop
b) end
c) return
d) terminate

Answer: c) return

What is the output of the following code snippet?

int x = 5, y = 10;
printf("%d\n", x++);
printf("%d\n", ++y);
 

a) 5, 11
b) 6, 11
c) 6, 10
d) 5, 10

Answer: d) 5, 10

Which function is used to concatenate two strings in C?

a) strcat()
b) concat()
c) append()
d) join()

Answer: a) strcat()

What will be the output of the following code snippet?

#include <stdio.h>
int main() {
    int i;
    for (i = 0; i < 5; i++) {
        if (i == 3)
            break;
        printf("%d ", i);
    }
    return 0;
}
 

a) 0 1 2
b) 0 1 2 3
c) 0 1 2 3 4
d) Compiler error

Answer: a) 0 1 2

Which escape sequence is used to print a newline character in C?

a) \n
b) \r
c) \t
d) \b

Answer: a) \n

What does the calloc() function do in C?

a) Allocates memory on the stack
b) Allocates memory on the heap
c) Frees memory
d) Resizes memory

Answer: b) Allocates memory on the heap

Which operator is used to find the remainder of division in C?

a) %
b) /
c) *
d) &

Answer: a) %

What is the output of the following code snippet?

#include <stdio.h>
int main() {
    int i;
    for (i = 0; i < 5; i++) {
        if (i == 3)
            continue;
        printf("%d ", i);
    }
    return 0;
}
 

a) 0 1 2
b) 0 1 2 3
c) 0 1 2 4
d) Compiler error

Answer: c) 0 1 2 4

Which function is used to dynamically deallocate memory in C?

a) free()
b) dealloc()
c) delete()
d) release()

Answer: a) free()