class A  
{
       friend int freund ();
             friend class B;
         public: int x, y;
         private: short i;
     } A1;
   class B
     {public: void func_b ();  } b1;
   int freund ()
     {A1.x = 1;  A1.y = 2;  A1.i + = 3;
       return A1.x + A1.y + A1.i; 
       }
void B :: func_B () {A1.i = 2; }
int main () {
B1.func_B ();
 cout << Freund ();
 }