2021/11/23

责任链
#include <iostream>
#include <vector>
using namespace std;

class relatives
{
public:
    relatives(){}
    virtual ~relatives(){}
    virtual bool request(int)=0;
};

class Manage1 : public relatives
{
public:
    Manage1(){}
    virtual ~Manage1(){}
    bool request(int num)
    {
        if (num<10000)
        {
            cout<<num<<"元订单主任给批准"<<endl;
            return true;
        }
        else
        {
            cout<<num<<"元订单主任不给批准，找部门经理"<<endl;
            return false;
        }
    }
};

class Manage2 : public relatives
{
public:
    Manage2(){}
    virtual ~Manage2(){}
    bool request(int num)
    {
        if (num<50000)
        {
             cout<<num<<"元订单部门经理给批准"<<endl;
            return true;
        }
        else
        {
            cout<<num<<"元订单部门经理不给批准，找副总经理"<<endl;
            return false;
        }
    }
};

class Manage3 : public relatives
{
public:
    Manage3(){}
    virtual ~Manage3(){}
    bool request(int num)
    {
        if (num<100000)
        {
            cout<<num<<"元副总经理给批准"<<endl;
            return true;
        }
        else
        {
            cout<<num<<"元订单副总经理不给批准，找总经理"<<endl;
            return false;
        }
    }
};


class Manage4 : public relatives
{
public:
    Manage4(){}
    virtual ~Manage4(){}
    bool request(int num)
    {
        if (num<200000)
        {
            cout<<num<<"元总经理给批准"<<endl;
            return true;
        }
        else
        {
            cout<<num<<"金额太大批不了"<<endl;
            return false;
        }
    }
};


class buysomething
{
private:
    vector<relatives*> p_vbuy;
public:
    buysomething()
    {
        p_vbuy.push_back(new Manage1);
        p_vbuy.push_back(new Manage2);
        p_vbuy.push_back(new Manage3);
        p_vbuy.push_back(new Manage4);
    }
    virtual ~buysomething()
    {
        p_vbuy.clear();
    }
    void request(int num)
    {
        bool flag=false;
        for (vector<relatives*>::iterator it=p_vbuy.begin();it!=p_vbuy.end();it++)
        {
            flag=(*it)->request(num);
            if (flag==true)
                break;
        }
    }
};

int main()
{
    buysomething *buy=new buysomething;
    buy->request(260000);
    delete buy;
    system("pause");
    return 0;
}