Dutor

#include <iostream>
//~ #include <string>
 
using namespace std;
 
class Base
{
public:
	virtual void foo()
	{
		cout<<"Base::foo()"<<endl;
	}
};
 
class Derived: public Base
{
private:
	void foo()
	{
		cout<<"Derived::foo()"<<endl;
	}
};
 
int 
main()
{
	Derived  * pD = new Derived;
	Base * pB = pD;
	pB->foo();			//~ OK, call Derived::foo()
	//~ pD->foo();			//~ oops, Derived::foo() is private!
	return 0;
}