/* A program that swaps integers using a function that accepts pointers to the
 * integers to be swapped
 */

#include <stdio.h>

void swap(int * q,int * p)
{
  int temp = *p;
  *p = *q; 
  *q = temp;
}

int main()
{
  int a = 10, b = 2, x = 3, y = 5;
  printf("a,b,x,y: %d,%d,%d,%d\n", a, b, x, y);
  swap(&x, &y);
  swap(&a, &b);
  printf("a,b,x,y: %d,%d,%d,%d\n", a, b, x, y);
  return 0;
}