Exercise 2

Implement the swap function to exchange the contents of the two variables using pointer notation for parameter passing.

#include<stdio.h>
void header()
{
  printf("\n\n\n\t\tBuilt & Designed by Arslan Malik\n\n\t\t www.CWorldbyAS.blogspot.com\n\n\n");
}
void swap(int *a,int *b)
{
    int hold;
    hold=*a;
    *a=*b;
    *b=hold;
}
int main()
{
  int x,y;
header();
printf("\n\n\n\n\n");
system("pause");
system("cls");
  while(x!=-1)
{
  printf("\nEnter Value of X : ");
  scanf("%d",&x);
  printf("\n\nEnter Value of Y : ");
  scanf("%d",&y);
  printf("\n\n\n\t\t\t\tBEFORE SWAPPING\n\n\n");
  printf("\t\t\t\tX = %d  &  Y = %d",x,y);
  printf("\n\n\n\t\t\t\tAFTER SWAPPING\n\n\n");
  swap(&x,&y);
  printf("\t\t\t\tX = %d  &  Y = %d",x,y);
  printf("\n\n\n\n");
}
  return 0;
}