备忘录模式（C++）

#include <iostream>

#include <string>

#include <vector>

#include <iomanip>

using namespace std;



class info

{

public:

    info():pc(0){}

    ~info(){}

    void input(string name,int age,int salary)

    {

        _name.push_back(name);

        _age.push_back(age);

        _salary.push_back(salary);

        pc++;

    }



    void show()

    {

        for (int i=0;i<pc;i++)

        {

            cout<<"name  :"<<_name[i]<<setw(10);

            cout<<"age   :"<<_age[i]<<setw(10);

            cout<<"salary:"<<_salary[i]<<endl;

        }

    }



    info* operator=(info* p)

    {

        info* temp;

        temp->_name=p->_name;

        temp->_age=p->_age;

        temp->_salary=p->_salary;

        temp->pc=p->pc;

        return temp;

    }



private:

    int pc;

    vector<string> _name;

    vector<int> _age;

    vector<int> _salary;



};



class Memorandum

{

public:

    Memorandum(){}

    ~Memorandum(){}



    void Save(info p)

    {

        _wh.push_back(p);

    }



    info Load()

    {

        vector<info>::reverse_iterator rit;

        rit=_wh.rbegin();

        return *rit;

    }



private:

    vector<info> _wh;

};



int main()

{

    Memorandum *p_wh=new Memorandum;

    info p_info;

    p_info.input("zhangsan",20,4000);

    p_wh->Save(p_info);

    p_info.show();

    cout<<endl;



    p_info.input("lisi",22,5000);

    p_info.input("wangwu",23,6000);

    p_info.show();



    cout<<endl;

    p_info=p_wh->Load();

    p_info.show();



    delete p_wh;

    system("pause");

    return 0;

}