Quiz: C Output Questions

5 questionsNo time limitPass: 60%+10 XP on first pass

The tricky C snippets used in TCS, Infosys, Wipro and Capgemini pseudocode and technical rounds — operators, loops, pointers, strings, macros and static — each run and explained.

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Question 1

What does this print?

#include <stdio.h>
int main(void) {
    int a = 5;
    int b = a++ + 10;
    printf("%d %d", a, b);
    return 0;
}

5 156 156 165 16

Question 2

What does this print?

#include <stdio.h>
int main(void) {
    int i = 1;
    if (i-- && i++) printf("A");
    printf("%d", i);
    return 0;
}

A1A010

Question 3

What does this print?

#include <stdio.h>
int main(void) {
    int arr[] = {1, 2, 3, 4, 5};
    int *p = arr;
    printf("%d", *(p + 3) - *p);
    return 0;
}

4321

Question 4

What does this print?

#include <stdio.h>
#define SQ(x) x * x
int main(void) {
    printf("%d", SQ(4 - 1));
    return 0;
}

9-1153

Question 5

What does this print?

#include <stdio.h>
int main(void) {
    int x = 10;
    printf("%d", x / 4 * 4 + x % 4);
    return 0;
}

1210811