继承派生

#include <iostream>

using namespace std;

class Base
{
public:
	virtual void show()
	{
		cout<< "base show" <<endl;
	}
};

class Derived:public Base
{
public:
	void show()
	{
		cout<< "derived show0" << endl;
	}
};

int main()
{
	Base *b = new Base;
	Base *d = new Derived;

	b->show();
	d->show();
}

base show
derived show