Function MCQs

Which of the following cannot be static in C?

#include statement must be written . . . . . . . .

A local variable declaration with no storage class specified is by default . . . . . . . .

What is the problem in the following C declarations?

int func(int);
double func(int);
int func(float);

Is initialisation mandatory for local static variables?

Which of the following function declaration is illegal?

What will be the output of the following C code?

#include <stdio.h>
#define A 1 + 2
#define B 3 + 4
int main()
{
    int var = A * B;
    printf("%d\n", var);
}

What will be the output of the following C code?

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

What will be the output of the following C code?

#include <stdio.h>
#define foo(x, y) x / y + x
int main()
{
    int i = -6, j = 3;
    printf("%d ", foo(i + j, 3));
    printf("%d\n", foo(-3, 3));
    return 0;
}