Function - C Programming MCQ Questions and Answers

#include <stdio.h>
int *m();
void main()
{
    int k = m();
    printf("%d", k);
}
int *m()
{
    int a[2] = {5, 8};
    return a;
}

#include <stdio.h>
void foo()
{
    return 1;
}
void main()
{
    int x = 0;
    x = foo();
    printf("%d", x);
}

#include <stdio.h>
void foo();
int main()
{
    void foo();
    foo();
    return 0;
}
void foo()
{
    printf("2 ");
}

#include <stdio.h>
#define SYSTEM 20
int main()
{
    int a = 20;
    #if SYSTEM == a
    printf("HELLO ");
    #endif
    #if SYSTEM == 20
    printf("WORLD\n");
    #endif
}