怎么插入的代码是这个样子？？？？？？？？？？？？？

怎么插入的代码是这个样子？？？？？？？？？？？？？

//需保存的信息class Memento  {public:int m_vitality; //生命值int m_attack;   //进攻值int m_defense;  //防守值public:Memento(int vitality, int attack, int defense):   m_vitality(vitality),m_attack(attack),m_defense(defense){}Memento& operator=(const Memento &memento) {m_vitality = memento.m_vitality;m_attack = memento.m_attack;m_defense = memento.m_defense;return *this;}};//游戏角色class GameRole  {private:int m_vitality;int m_attack;int m_defense;public:GameRole(): m_vitality(100),m_attack(100),m_defense(100) {}Memento Save()  //保存进度，只与Memento对象交互，并不牵涉到Caretake{ Memento memento(m_vitality, m_attack, m_defense);return memento;}void Load(Memento memento)  //载入进度，只与Memento对象交互，并不牵涉到Caretake{m_vitality = memento.m_vitality;m_attack = memento.m_attack; m_defense = memento.m_defense;}void Show() { cout<<"vitality : "<< m_vitality<<", attack : "<< m_attack<<", defense : "<< m_defense<<endl; }void Attack() { m_vitality -= 10; m_attack -= 10;  m_defense -= 10; }};//保存的进度库class Caretake  {public:Caretake() {}void Save(Memento menento) { m_vecMemento.push_back(menento); }Memento Load(int state) { return m_vecMemento[state]; }private:vector<Memento> m_vecMemento;};

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