#include <stdio.h>
#include <stdlib.h>


// Compare to foo in example3.cpp. This version of foo
// behaves EXACTLY the same way, it is another way to 
// do the same thing that the foo function does in example3.cpp
void foo(int * a, int * b)
{
  a[0] = 10;
  b[0] = 20;
}


int main()
{
  int x = 333;
  int y = 444;

  printf("before calling foo:\n");
  printf("x = %d, y = %d\n\n", x, y);
  foo(&x, &y);

  // note that, in contrast to example4.cpp, the values of x and y 
  // are different after calling the foo function.
  printf("after calling foo:\n");
  printf("x = %d, y = %d\n", x, y);
}