C++虚函数访问权限的改变

#pragma once
#include <iostream>
using namespace std;


class Base
{
public:
	Base(void){}
	~Base(void){}
	virtual	void fun(){cout<<"This is Base::fun"<<endl;}
	virtual void func()=0;
};

#pragma once
#include "base.h"
class Son :public Base
{
public:
	Son(void){}
	~Son(void){}
	virtual void fun(){cout<<"This is a son function"<<endl;}
protected:
	virtual void func(){cout<<"what a fuck day it is"<<endl;}
};

#pragma once
#include "son.h"
class T :
	public Son
{
public:
	T(void){}
	~T(void){}
	void xy()
	{
		Base *b = new Son();
		b->func();
	}
};

#include "testInline.h"
#include "Son.h"
#include "T.h"


void main()
{
	Base* pB;
	Son* pS = new Son();
	pB = pS;
	pB->fun();


	T tst;
	tst.xy();
}

结果：

This is a son function
what a fuck day it is

C++虚函数访问权限的改变

原文：http://blog.csdn.net/ddupd/article/details/41925887