#include <iostream.h>

  int main(int argc, char *argv[])
  {
     int x, y;
     void f(int, int);

     x = 10;
     y = 100;

     cout << "Address of x = " << (unsigned int) &x 
	  << ", address of y = " << (unsigned int) &y << "\n";

     cout << "Before f(x,y), x = " << x << ", y = " << y << "\n";

     f(x, y);

     cout << "After f(x,y), x = " << x << ", y = " << y << "\n";
  }

  void f(int a, int b)
  {
     cout << "Address of a = " << (unsigned int) &a 
	  << ", address of b = " << (unsigned int) &b << "\n";

     cout << "Before increment a = " << a << ", b = " << b << "\n";
     a = a + 10000;
     b = b + 10000;
     cout << "After increment a = " << a << ", b = " << b << "\n";
  }