为什么他的语法正确的程序不能在带有llvm编译器的Xcode IDE上编译？

github存储库：https://github.com/d-parkinson/C-practice-file.git

创建于2016年4月4日，作者Darren Parkinson。这是一款由两个角色组成的双人模拟格斗游戏：恶棍与英雄每个字符分别具有四个功能：名称（字符串）、运行状况（整数）、踢球（整数）和打孔（整数）

#include <iostream>
#include <string>

包含有关字符特征的详细信息的超类

class Character{
public:
    std::string name;
    static int health;
    int kick;
    int punch;
    Character(std::string name, int health, int kick, int punch){
        this -> health = health;
        this -> name = name;
        this -> kick = kick;
        this -> punch = punch;
    }
    ~Character(){}
};

显示英雄特征的子类

class Hero : public Character{
public:
    Hero(std::string name, int health, int kick, int punch) : Character(name, health, kick, punch){
        std::cout << name << ": Joker giving trouble again" << std::endl;
    }
    ~Hero(){}
};

显示绒毛特征的子类

class Villian : public Character{
public:
    Villian(std::string name, int health, int kick, int punch) : Character(name, health, kick, punch){
        std::cout << name << ": Hey there hehehe" << std::endl;
    }
    ~Villian(){}
};

说明反派和英雄类之间动作的功能

void VillianPunch(Hero *hero, Villian *villian){
    hero -> health -= villian -> punch;
    std::cout << villian -> name << ": take this(punch)" << std::endl;
}
void VillianKick(Hero *hero, Villian *villian){
    hero -> health -= villian -> kick;
    std::cout << villian -> name << ": take this(kick)" << std::endl;
}
void HeroPunch(Hero *hero, Villian *villian){
    villian -> health -= hero -> punch;
    std::cout << hero -> name << ": take this(punch)" << std::endl;
}
void HeroKick(Hero *hero, Villian *villian){
    villian -> health -= hero -> kick;
    std::cout << hero -> name << ": take this(kick)" << std::endl;
}

主要功能

    int main(void){
    Hero *batman;
    Villian *joker;
    joker = new Villian("Joker",1000,90,63);
    batman = new Hero("Batman",1100,93,60);
    std::cout << "Fight!!!" << std::endl;

做功能模拟维廉和英雄之间的战斗

    do{
        HeroPunch(batman, joker);
        VillianPunch(batman, joker);
        VillianKick(batman, joker);
        HeroKick(batman, joker);
        if(batman -> health <= 0)
            std::cout << joker -> name << ": You won't catch me today hehehe" << std::endl;
        else if(joker -> health <= 0)
            std::cout << batman -> name << ": How many times do I have to defeat you" << std::endl;
    }while((batman -> health > 0) & (joker -> health > 0));
    delete joker;
    delete batman;
    return 0;
}

我是一名新的c++程序员，正在练习git和堆栈溢出
以下错误消息：

"字符：：健康"，引用自：

VillianPunch（英雄*，Villian*）在游戏模拟。o

游戏模拟中的VillianKick（英雄*，Villian*）。o

HeroPunch（英雄*，维廉*）在游戏模拟。o

HeroKick（英雄*，维廉*）在游戏模拟。o

_主要在游戏模拟。o

字符：：字符（std:：__1:：basic_string，std:：___1:：allocater>，int，int，int）。old:

找不到体系结构x86_64 的符号

clang:错误：链接器命令失败，退出代码为1（使用-v参见调用）