#include <iostream.h>
class A
{
private:		int privA;
protected: 		int protA;
public:			int pubA;
};
class B : private A
{
public:
	void fn()
	{
		int a;
		//a = privA;	//錯誤：不可訪問 
		a = protA;		//有效 
		a = pubA;		//有效 
    }
};
void main()
{
	A objA;
	B objB;
	objA.pubA = 10;
	//objB.pubA = 10;	//不能訪問pubA為B的私有成員
}