What will be the output of the program?

#include<stdio.h>
int

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;
 }

2) What will be the output of the program?

#include<stdio.h>
#include<stdlib.h>
int main()
 {
     int i=0;
     i++;
     if(i<=5)
     {
         printf("Study2Online");
         exit(1);
         main();
     }
     return 0;
 }

3) There is a error in the below program. Which statement will you add to remove it?

#include<stdio.h>
int main()
 {
     int a;
     a = f(10, 3.14);
     printf("%d\n", a);
     return 0;
 }
 float f(int aa, float bb)
 {
     return ((float)aa + bb);
 }

4) What will be the output of the program?

#include<stdio.h>
int sumdig(int);
int main()
{
     int a, b;
     a = sumdig(123);
     b = sumdig(123);
     printf("%d, %d\n", a, b);
     return 0;
 }
int sumdig(int n)
 {
     int s, d;
     if(n!=0)
     {
         d = n%10;
         n = n/10;
         s = d+sumdig(n);
     }
     else
         return 0;
     return s;
 }

5) What will be the output of the program?

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