/*
 * passval3.c
 */
#include <stdio.h>

void swap(int,int);

int main(void)
{
  int aa,bb;
  aa=5;
  bb=26;
  
  // Displaying the values of aa and bb before calling swap()
  printf("Before calling swap(), aa is: %d and bb is %d\n", aa,bb);
  
  swap(aa,bb); // calling swap 

  printf("After calling swap(), aa is: %d and bb is %d\n", aa,bb);
  
  return 0;
}

void swap(int xx, int yy)
{
  int tmp;

  tmp=xx;
  xx=yy;
  yy=tmp;
  
  printf("\nIn swap():");
  printf("xx is: %d and yy is: %d\n", xx,yy);
}