#include <iostream.h>

class Frac
{  friend void foo(Frac&);
   public:
   void foo();
    int num;
    int denom;
};

void Frac::foo()
{  
   num=11; denom=12;
   int *ptr = &num;
   cout << *ptr << endl;
}

int main()
{  Frac r, s;
   int* pt;
   void (* fn)();
   r.foo();
   s.foo();
   pt = &r.num;
   //fn = &(r.foo);
   //fn();
   return(0);
}