/* A CH applet with pointer cannot be executed across the network */
#include<stdio.h>
void swap(int *a, int *b);
int main() {
  int x = 4;
  int y = 5;
  printf("x = %d, y = %d\n", x, y);
  swap(&x,&y); /* pass by value */
  printf("x = %d, y = %d\n", x, y);
  getchar();
}
void swap(int *a, int *b) {
  int temp;
  temp = *a;
  *a = *b;
  *b = temp;
}