复制构造和赋值构造的一些尝试

小记：运行环境：vs 2013 c++ win32 console application

#include "stdafx.h"

#include <iostream> 

#include <cstdlib> 

using namespace std;

class A{

public:

    A(){ cout << "A::A()" << endl; }

    A(A&){ cout << "A::A(A&)" << endl; }

    A& operator=(A& a)
    { cout << "operator=(A&)" << endl;
//    *this = a;        // endless loop
    return *this; }

};



int  _tmain(int argc, _TCHAR* argv[])

{

//    A a, b;        // two default constructor
//    a = b;        // one assignment

//    A a;        // one default constructor
//    A b = a;    // one copy constructor

    A c = A();        // one default constructor, no temporary project

    system("pause");
    return 0;

}

 

Author：角落里的一条狗