/* main.c */
#include <stdio.h>
void swap();

int buf[2] = {1,2};

int main()
{
  printf(" BEFORE buf[0] = %d buf[1] = %d\n",buf[0],buf[1]);
  swap();
  printf(" AFTER  buf[0] = %d buf[1] = %d\n",buf[0],buf[1]);
  return 0;
}