#include <iostream.h>
class Base
{
 public:
 virtual void fn()
  { cout << "In Base Klasse \n"; }
};
class SubClass : public Base
{
 public:
 virtual void fn()
  {cout << "In Sub Klasse\n";}
};

void test(Base &b)
{
 b.fn();
}

int main()
{
 Base bc;
 SubClass sc;
 cout << "bc aufrufen\n";
 test(bc);
 cout << "sc aufrufen\n";
 test(sc);
 return 0;
}