2.全局变量，int monster = 10000;定义英雄类hero，受保护的属性string name，int hp,int attck；公有的无参构造，有参构造，虚成员函数 void Atk(){blood-=0;}，法师类继承自英雄类，私有属性 int ap_atk=50；重写虚成员函数void Atk(){blood-=(attck-ap_atk);}；射手类继承自英雄泪，私有属性 int ac_atk = 100；实例化类对象，判断怪物何时被杀死。
 

#include <iostream>using namespace std;int monster = 10000;class Hero
{
protected:string name;int hp;int attck;
public:Hero(){}Hero(string name,int hp,int attck):name(name),hp(hp),attck(attck){}virtual void Atk(){monster-=0;}};class Caster:public Hero
{int ap_atk=50;public:Caster(){}Caster(string name, int hp, int attack):Hero(name, hp, attack) {}void atk(){monster-=(attck+ap_atk);}
};class Archer:public Hero
{int ad_atk = 100;
public:Archer() {}Archer(string name, int hp, int attack):Hero(name, hp, attack) {}void atk(){monster -= (attck + ad_atk);}
};int main()
{while(1){Caster h1("A", 20000, 300);h1.atk();//攻击if (monster <= 0){cout << "怪物已阵亡" << endl;break;}cout << "A发动了攻击，怪物剩余血量" << monster << endl;Archer h2("B", 12000, 400);h2.atk();if (monster <= 0){cout << "怪物已阵亡" << endl;break;}cout << "B发动了攻击，怪物剩余血量" << monster << endl;}return 0;
}