C++ 太多的析构函数调用了这么少的对象-6ren

C++ 太多的析构函数调用了这么少的对象

转载作者：塔克拉玛干更新时间：2023-11-02 23:09:11

<分区>

这是代码(也在 http://pastebin.com/yw5z2hnG ):

#include <iostream>
#include <vector>
using namespace std;

class X
{
    public:
    int i;
    X();
    ~X();
};

X::X()
{
    i = 1;
    cout << "---constructor" << '\n';
}

X::~X()
{
    cout << "***desctructor" << '\n';
}

int main()
{
    vector<X> *vx = new vector<X>;
    cout << "------------------------------------" << endl;
    vx->push_back(X());
    vx->push_back(X());
    vx->push_back(X());
    vx->push_back(X());
    vx->push_back(X());
    cout << "------------------------------------" << endl;
    delete vx;
}

我得到的输出是:

------------------------------------
---constructor
***desctructor
---constructor
***desctructor
***desctructor
---constructor
***desctructor
***desctructor
***desctructor
---constructor
***desctructor
---constructor
***desctructor
***desctructor
***desctructor
***desctructor
***desctructor
------------------------------------
***desctructor
***desctructor
***desctructor
***desctructor
***desctructor