c++特殊构造函数详解

class Monster
{
public:
 
	Monster(Monster& m)		//拷贝构造函数（默认形态）
	{
		//默认的拷贝构造函数（默认形态），将对象一一对应给值
		cout << "默认的拷贝构造函数（默认形态） " << endl;
		this->hp = m.hp;
	}
	Monster(int hp);		//构造函数
	~Monster();				//析构函数
	void show();
private:
	int hp;
};
int main()
{
	Monster monster1(100);
	monster1.show();
	Monster monster3 = monster1;//使用monster1给monster3初始化
	monster3.show();
	Monster monster4(monster1);//使用monster1去构造monster4
	monster4.show();
	return 0;
}
Monster::Monster(int hp)
{
	cout << "调用了带参构造函数" << endl;
	this->hp = hp;
}
Monster::~Monster()
{
	cout << "调用了析构函数" << endl;
}
void Monster::show()
{
	cout << "调用了显示函数" << endl;
	cout<<this->hp << "" << endl;
 
}

public:
	int *p;
	Rect();
	~Rect();
	int width;//宽
	int height;//高
	//重载拷贝构造，实现浅拷贝拷贝
	Rect(Rect&rect)
	{
		
		this->height = rect.height;
		this->width = rect.width;
		this->p=rect.p;
	}

public:
	int *p;
	Rect();
	~Rect();
	int width;//宽
	int height;//高
	//重载拷贝构造，实现深拷贝
	Rect(Rect&rect)
	{
		
		this->height = rect.height;
		this->width = rect.width;
		this->p = new int;//重新申请内存
		*p = *rect.p;//拷贝之前的值
	}