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>
void fun(int*, int*);
int main()
 {
     int i=5, j=2;
     fun(&i, &j);
     printf("%d, %d", i, j);
     return 0;
 }
 void fun(int *i, int *j)
 {
     *i = *i**i;
     *j = *j**j;
 }

3) What will be the output of the program?

#include<stdio.h>
int check (int, int);
int main()
 {
     int c;
     c = check(10, 20);
     printf("c=%d\n", c);
     return 0;
 }
 int check(int i, int j)
 {
     int *p, *q;
     p=&i;
     q=&j;
     i>=45 ? return(*p): return(*q);
 }

4) Point out the error in the program

#include<stdio.h>
int f(int a)
 {
   a > 20? return(10): return(20);
 }
int main()
 {
     int f(int);
     int b;
     b = f(20);
     printf("%d\n", b);
     return 0;
 }

5) Point out the error in the program

#include<stdio.h>
int main()
 {
     int a=10;
     void f();
     a = f();
     printf("%d\n", a);
     return 0;
 }
 void f()
 {
     printf("Hi");
 }