Swap two numbers using pointers

#include<stdio.h>

main()

{

   int x, y, *a, *b, temp;

   printf("Enter the value of x and y ");

   scanf("%d%d",&x,&y);

   printf("Before Swapping\nx = %d\ny = %d\n", x, y);

   a = &x;

   b = &y;

   temp = *b;

   *b = *a;

   *a = temp;

   printf("After Swapping\nx = %d\ny = %d\n", x, y);

   return 0;

}