c++0x11新特性:delete删除函数

// c_plus_plus_0x11.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include <Windows.h>
#include <iostream>
using namespace std;

class A
{
public:
    int add(int a, int b){ return a + b; }
    int sub(int a, int b){ return a - b; }
};

class B :public A
{
public:
    //int sub(int a, int b) = delete;
};


int _tmain(int argc, _TCHAR* argv[])
{
    A a;
    cout << "5+2=" << a.add(5, 2) << endl;
    cout << "5-2=" << a.sub(5, 2) << endl<<endl;

    B b;
    cout << "9+3=" << b.add(9, 3) << endl;
    cout << "9-3=" << b.sub(9, 3) << endl << endl;


    cout << "done" << endl;
    getchar();
    return 0;
}

//int sub(int a, int b) = delete;

// c_plus_plus_0x11.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include <Windows.h>
#include <iostream>
using namespace std;

class A
{
public:
    A(int a, int b){ a_ = a; b_ = b; }
    int add(){ return a_ + b_; }
    int sub(){ return a_ - b_; }

    //A(const A&) = delete;        // no copy

    int a_{};
    int b_{};
};

int _tmain(int argc, _TCHAR* argv[])
{
    A a(5,2);
    cout << "5+2=" << a.add() << endl;
    cout << "5-2=" << a.sub() << endl<<endl;

    A b=a;
    cout << b.a_ << "+" << b.b_ << "=" << b.add() << endl;
    cout << b.a_ << "-" << b.b_ << "=" << b.sub() << endl;


    cout << "done" << endl;
    getchar();
    return 0;
}

    //A(const A&) = delete;        // no copy