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()
 {
     float k=3;
     fun(k=fun(fun(k)));
     printf("%f\n", k);
     return 0;
 }
int fun(int i)
 {
     i++;
     return i;
 }

2) What will be the output of the program?

#include<stdio.h>
int fun(int, int);
 typedef int (*pf) (int, int);
 int proc(pf, int, int);
int main()
 {
     printf("%d\n", proc(fun, 6, 6));
     return 0;
 }
 int fun(int a, int b)
 {
    return (a==b);
 }
int proc(pf p, int a, int b)
 {
    return ((*p)(a, b));
 }

3) What will be the output of the program?

#include<stdio.h>
int fun(int i)
 {
     i++;
     return i;
 }
int main()
 {
     int fun(int);
     int i=3;
     fun(i=fun(fun(i)));
     printf("%d\n", i);
     return 0;
 }

4) 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;
 }

5) How many times the program will print "Study 2 Online" ?

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