C++ 构造、析构的顺序

 

/*
构造时：先成员，后构造函数，然后处理父类
析构时与构造时完全相反顺序。

baseC()
base()
derivedC()
derived()
~derived()
~derivedC()
~base()
~baseC()
*/

#include <iostream>

using namespace std;

class baseC
{
public:
    baseC() { cout <<"baseC()"<<endl; }
    ~baseC() { cout <<"~baseC()"<<endl; }
};

class derivedC
{
public:
    derivedC() { cout <<"derivedC()"<<endl; }
    ~derivedC() { cout <<"~derivedC()"<<endl; }
};


class base
{
public:
    base() { cout <<"base()"<<endl; }
    ~base() { cout <<"~base()"<<endl; }
    class baseC c;
};

class derived: public base
{
public:
    class derivedC c;
    derived() { cout <<"derived()"<<endl; }
    ~derived() { cout <<"~derived()"<<endl; }
};


int main()
{
    derived d;
        return 0;
}