// 005.cpp: 定义控制台应用程序的入口点。

//

#include "stdafx.h"

#include <functional>

#include <iostream>

using namespace std;

int MyAdd(int a, int b) { return a + b; }

class MyMinus {

public:

    int operator()(int a, int b) {

        return a - b;

    }

};

class binary_operators {

public:

    typedef std::function<int(int, int)> FUNC;

    binary_operators(FUNC f,int a, int b) :func_(f),left(a), right(b),result() {}

    int GetResult() { return func_(left, right); }

private:

    std::function<int(int, int)> func_;

    int left;

    int right;

    int result;

};

int main()

{

    binary_operators addOperation(std::function<int(int, int)>(MyAdd),,);

    binary_operators minusOperation(std::function<int(int, int)>(MyMinus()), , );

    std::cout << "addOperation(1,2) result: " << addOperation.GetResult() << std::endl;

    std::cout << "minusOperation(5,7) result: " << minusOperation.GetResult() << std::endl;

    return ;

}