Call by Reference

//Call by Reference

#include<stdio.h>
int swap(int *a, int *b)
{
  int t;
  t=*a;
  *a=*b;
  *b=t;
}

int main()
{
  int i, j;

  printf("Enter the values ");
 scanf("%d%d",&i,&j);

  printf("Before swapping %d and  %d\n",i,j);

  swap(&i,&j);

  printf("After swapping %d and %d\n",i,j);

return 0;
}