#include <stdio.h>

void swap(int *,int *);  // This function swaps two variables //

int main (void) {

 int a = 5;              // Two testing values //
 int b = 10;

 printf("%d,%d \n",a,b);
 
 swap(&a,&b);

 printf("%d,%d",a,b);


  return 0;
}

// The 'swap' function, swaps two variables using a third   //
// temporary variable which is destroyed after the execution//
// of the function.											//


 void swap(int *a,int *b) {

 int tmp;
 tmp = *a;
 *a = *b;
 *b = tmp;
  }