关于C++虚函数（一）

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于 2014-08-29 09:29:19 发布

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分类专栏： C/C++语言文章标签： c++ 虚函数

本文链接：https://blog.youkuaiyun.com/umberlla186/article/details/38919763

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代码一：

class Base
{
public:
	virtual void foo()
	{
		cout<<"Base::foo()"<<endl;
		zoo();
	}
	void zoo()
	{
		cout<<"Base::zoo()"<<endl;
		//foo();
	}
};

class Derived : public Base
{
public:
	virtual void foo()
	{
		cout<<"Derived::foo()"<<endl;
		zoo();
	}
	void zoo()
	{
		cout<<"Derived::zoo()"<<endl;
		//foo();
	}
};

int main() 
{
	Base *b = new Derived();
	b->foo();

	return 0;
}

代码二：

class Base
{
public:
	virtual void foo()
	{
		cout<<"Base::foo()"<<endl;
		//zoo();
	}
	void zoo()
	{
		cout<<"Base::zoo()"<<endl;
		foo();
	}
};

class Derived : public Base
{
public:
	void foo()
	{
		cout<<"Derived::foo()"<<endl;
		//zoo();
	}
	void zoo()
	{
		cout<<"Derived::zoo()"<<endl;
		foo();
	}
};
int main() 
{
	Base *b = new Derived();
	b->zoo();

	return 0;
}