c++ - 循环运行时错误

我使用c++编写了一个非常简单的游戏。大多数功能都可以正常工作，但是每当我尝试重玩游戏时，该值都不会重置，并继续到我上次中断的位置，这不是我想要的。就像可以说的那样，在我的第一次尝试中，我击败了敌人并且健康状态为零，当我重试该值时，该值不是从100开始，而是从零开始。我真的想要解决此问题。无论如何，这是我的代码(“很长):

#include <iostream>
#include <string>
using namespace std;

class Health{
private:
    int health;
    Health(const Health& cpy){
        health = cpy.health;
    }
public:
     Health(){
        health = 100;
    }
    void display_health(){
        cout << "Health: " << health << endl;
    }

    Health& operator -=(int atk){
        health -= atk;
        return *this;
    }

    bool operator <(int compare){
        return (health < compare);
    }
    bool operator >(int compare){
        return !(this->operator<(compare));
    }
    bool operator &&(const int compare){
        return (health && compare);
    }
};

class Hero : public Health{
public:
    void kick(){
        cout << "Your kick damaged 45 health points" << endl;
    }
    void Punch(){
        cout << "Your punch damaged 25 health points" << endl;
    }
    void Knife(){
        cout << "Your kinfe damaged 60 health points" << endl;
    }
    void Tackle(){
        cout << "Your tackle damaged 10 health points" << endl;
    }
};

class Enemy : public Health{
public:
    void Basic_hit(){
        cout << "Enemy damaged you by 25 point" << endl;
    }
};

int main(){
    //local vaiables
    string name;
    int choice;
    string ply_agn = "y";
    //instance
    Hero hero;
    Enemy enmy;
    //user interface
    do{ //entire game repeats
        cout << "Enter you character name: ";
        getline(cin, name);
        cout << "Your default health is : ";
        hero.display_health();
        cout << endl;
        do{
            //user interface
            cout << "0.Kick - 45" << endl;
            cout << "1.Punch - 25 " << endl;
            cout << "2.Kinfe -  60" << endl;
            cout << "3.Tackle - 10 " << endl;
            //players choice
            cout << "Which move you like to chose: ";
            cin >> choice;
            cout << endl;
            //switch function
            switch (choice)
            {
            case 0:
                hero.kick();
                cout << "Enemy ";
                enmy -= 45;
                enmy.display_health();
                break;
            case 1:
                hero.Punch();
                cout << "Enemy ";
                enmy -= 25;
                enmy.display_health();
                break;
            case 2:
                hero.Knife();
                cout << "Enemy ";
                enmy -= 60;
                enmy.display_health();
                break;
            case 3:
                hero.Tackle();
                cout << "Enemy ";
                enmy -= 10;
                enmy.display_health();
                break;
            default:
                cout << "Invalid move! Try again" << endl;
                break;
            }
            cout << endl;
            //Enemy move
            enmy.Basic_hit();
            hero -= 25;
            cout << "The enemy hit you with a basic hit. You recieved 25 damage" << endl;
            cout << "Your ";
            hero.display_health();
            cout << endl;
        } while (enmy > 0);
        //winning condition
        if (enmy < 0 && hero > 0) {
            cout << "You won" << endl;
        }
        else if (hero < 0 && enmy > 0){
            cout << "You lose" << endl;
        }
        else if (hero < 0 && enmy < 0){
            cout << "This game is a draw" << endl;
        }
    } while (ply_agn == "y"); //This is where I think is messing up the game

        //repeating condition
        cout << "Would you like to play again: ";
        cin >> ply_agn;

    system("pause");
    return 0;
}

谢谢你的时间

最佳答案

放在

Hero hero;
Enemy enmy;

在do{之后，例如

...
string ply_agn = "y";
//user interface
do{ //entire game repeats
    //instance
    Hero hero;
    Enemy enmy;
    ...