C++析构函数是怎么出来的？

Question

#include
#include
#include
#include

using namespace std;

class Door {
public:
void open() const {
cout << "open door horizontally" << endl;
}

void close() const {
cout << "close door horizontally" << endl;
}
virtual ~Door()
{
cout << " Door is delete " <<endl;
}
};

class DoorController {
protected:
vector _doorVec;

public:
void addDoor(Door aDoor) {
_doorVec.push_back(aDoor);
}

void openDoor() const {
for_each(_doorVec.begin(), _doorVec.end(), mem_fun_ref(&Door::open));
cout << "openDoor is end" <<endl;
}

virtual ~DoorController()
{
cout << "DoorController is delelte" <<endl;
}
};

int main()
{
DoorController dc;
Door doorc;
dc.addDoor(doorc);
dc.addDoor(doorc);
// dc.addDoor(Door());
// dc.addDoor(Door());
dc.openDoor();
}

运行结果：

Answer 1

virtual ~BaseControl(void)
{

    if(i_sbHandler)
    {
        delete i_sbHandler;
        i_sbHandler=NULL;
    }
}

上面是基类BaseControl的析构函数，写成virtual 防止使用多态的时候，delete 时未执行 该函数

在程序退出的时候

    inline static ......<br/><strong>答案就在这里：</strong><a target='_blank' rel='nofollow' href='http://blog.csdn.net/xugangjava/article/details/8477777'>C++ 析构函数</a><br/>----------------------Hi，地球人，我是问答机器人小S，上面的内容就是我狂拽酷炫叼炸天的答案，除了赞同，你还有别的选择吗？