C++第二次作业补充

项目7（1）

#include <iostream>
using namespace std;
class Role
{
public:
    void eat(int d); //吃东西，涨d血
    void attack(); //攻击别人，涨1血
    void beAttack(); //被攻击，失1血，血为0死掉
    bool isAlived(); //是否活着
    void setRole(string nam, int b); //设置
    void show(); //显示
private:
    string name;
    int blood;
    bool life;
};
void Role::eat(int d) //吃东西，涨d血
{
    if(isAlived())
        blood+=d;
}
void Role::attack() //攻击别人，涨1血
{
    if(isAlived())
        blood++;
}
void Role::beAttack() //被攻击，失1血，血为0死掉
{
    if(isAlived())
        blood--;
    if(blood==0)
        life=false;
}
bool Role::isAlived() //是否活着
{
    return life;
}
void Role::setRole(string nam, int b) //设置
{
    name=nam;
    blood=b;
    if(blood>0)
        life=true;
    else
        life=false;
}
void Role::show() //显示
{
    cout<<name<<" has "<<blood<<" blood, it is ";
    if(isAlived())
        cout<<"alived.";
    else
        cout<<"dead.";
    cout<<endl;
}
int main( )
{
    Role mary;
    mary.setRole("Mary", 4);
    mary.show();
    mary.attack();
    mary.eat(2);
    mary.beAttack();
    mary.beAttack();
    mary.show();
    return 0;
}