What will be the output of the program?

#include<stdio.h>
int

What will be the output of the program?

#include<stdio.h>
int fun(int(*)());
int main()
 {
     fun(main);
     printf("Hi\n");
     return 0;
 }
int fun(int (*p)())
 {
     printf("Hello ");
     return 0;
 }

2) What will be the output of the program?

#include<stdio.h>
int main()
 {
     int i=1;
     if(!i)
         printf("Study2Online,");
     else
     {
         i=0;
         printf("C-Program");
         main();
     }
     return 0;
 }

3) What will be the output of the program?

#include<stdio.h>
int addmult(int ii, int jj)
 {
     int kk, ll;
     kk = ii + jj;
     ll = ii * jj;
     return (kk, ll);
 }
int main()
 {
     int i=3, j=4, k, l;
     k = addmult(i, j);
     l = addmult(i, j);
     printf("%d %d\n", k, l);
     return 0;
 }

4) If int is 2 bytes wide.What will be the output of the program?

#include <stdio.h>
void fun(char**);
int main()
 {
     char *argv[] = {"ab", "cd", "ef", "gh"};
     fun(argv);
     return 0;
 }
void fun(char **p)
 {
     char *t;
     t = (p+= sizeof(int))[-1];
     printf("%s\n", t);
 }

5) Which of the following is not a library function: