Function - C Programming MCQ Questions and Answers

-------file test.c-------
#include <stdio.h>
#include ""test.h""
int main()
{
  i = 10;
  printf(""%d "", i);
  foo();
}

-----file test1.c------
#include <stdio.h>
#include ""test.h""
int foo()
{
  printf(""%d\n"", i);
}

-----file test.h-----
#include <stdio.h>
#include <stdlib.h>
static int i;

#include <stdio.h>
int main()
{
    extern ary1[];
    printf("%d\n", ary1[0]);
}

#include <stdio.h>
#include "test.h"
#include "test.h"
int main()
{
    //some code
}