Function MCQs

What is the scope of an automatic variable?

What will be the output of the following C code having void return-type function?

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

If the file name is enclosed in double quotation marks, then . . . . . . . .

What will be the output of the following C code?

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

Which of the following storage class supports char data type?

register keyword mandates compiler to place it in machine register.

What will be the output of the following C code?

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

Functions have static qualifier for its declaration by default.

Can we use a function as a parameter of another function? [Eg: void wow(int func())].