CallByReference.c

#include<stdio.h>
void main()
{
  void swap(int *,int *);
  int a,b;
  scanf("%d%d",&a,&b);
  printf("In Main function Before swaping \n");
  printf("The Value of A=%d B=%d\n",a,b);
  printf("Address of A and B  %d  %d",&a,&b);
  swap(&a,&b);
  printf("\n\nIn Main function After swaping \n");
  printf("The Value of A=%d B=%d",a,b);
  printf("\nAddress of A and B  %d  %d",&a,&b);
}
void swap(int *x,int *y)
{
    printf("\n\n\nBefore\n");
  printf("Inside Swaping Function\n");
  printf("\nAddress of Denoting X and Y %d  %d",x,y);
  printf("\nAddress of pointer          %d  %d",&x,&y);
  printf("\n The value of X and Y       %d  %d",*x,*y);
  printf("\n\n\n");
  int temp=*x;
  *x=*y;
  *y=temp;
  printf("\nAfter\n");
  printf("\nAddress of Denoting X and Y  %d  %d",x,y);
  printf("\nAddress of pointer           %d  %d",&x,&y);
  printf("\n The value of X and Y        %d  %d",*x,*y);
  printf("\n\n\n");
}