[C++知识库]C++的constructor和destructor

constructor

class类有自己默认的constructor，方法体为空。当我们构建自己的constructor后，默认constructor失效，也可以手动删除默认constructor。

//删除默认constructor，构建自己的constructor
class Player
{
private:
	int PlayerX,PlayerY;
public:
	Player() = delete;
	Player(int x,int y){
		PlayerX = x;
		PlayerY = y;
	}
}

int main(){
	Player player(1,1);
}

destructor

类的destructor在main结束后，会自动调用destructor，若手动调用destructor，main函数结束还是会再次调用destructor

class Player
{
private:
	int PlayerX,PlayerY;
public:
	Player() = delete;
	Player(int x,int y){
		PlayerX = x;
		PlayerY = y;
	}
	
	~Player(){
		...
	}
}

int main(){
	Player player(1,1);
	player.~player();
}