2021.12.1 职责链模式c++

一、今日学习内容

[实验任务一]：财务审批

某物资管理系统中物资采购需要分级审批，主任可以审批1万元及以下的采购单，部门经理可以审批5万元及以下的采购单，副总经理可以审批10万元及以下的采购单，总经理可以审批20万元及以下的采购单，20万元以上的采购单需要开职工大会确定。现用职责链模式设计该系统。

#include<iostream>
using namespace std;
#include<string>
//抽象管理者
class Manager
{
protected:
    Manager *m_manager;
    string m_name;
public:
    Manager(Manager *manager, string name) :m_manager(manager), m_name(name){}
    virtual void DealWithRequest(string name, int num)  {}
};
//主任
class Director : public Manager
{
public:
    Director(Manager *manager, string name) :Manager(manager, name) {}
    void DealWithRequest(string name, int num)
    {
        if (num < 10000) //主任职权之内
        {
            cout << "主任" << m_name << "审批采购单：" << name << "，采购金额：" << num << "元" << endl << endl;
        }
        else
        {
            cout << "主任" << m_name << "无法处理，交由部门经理处理" << endl;
            m_manager->DealWithRequest(name, num);
        }
    }
};
//部门经理
class CommonManager : public Manager
{
public:
    CommonManager(Manager *manager, string name) :Manager(manager, name) {}
    void DealWithRequest(string name, int num)
    {
        if (num < 50000) //部门经理职权之内
        {
            cout << "部门经理" << m_name << "审批采购单：" << name << "，采购金额：" << num << "元" << endl << endl;
        }
        else
        {
            cout << "部门经理" << m_name << "无法处理，交由副总经理处理" << endl;
            m_manager->DealWithRequest(name, num);
        }
    }
};
//副总经理
class  VicePresident : public Manager
{
public:
    VicePresident(Manager *manager, string name) :Manager(manager, name) {}
    void DealWithRequest(string name, int num)
    {
        if (num < 100000) //副总经理职权之内
        {
            cout << "副总经理" << m_name << "审批采购单：" << name << "，采购金额：" << num << "元" << endl << endl;
        }
        else
        {
            cout << "副总经理" << m_name << "无法处理，交由总经理处理" << endl;
            m_manager->DealWithRequest(name, num);
        }
    }
};
//总经理
class  President : public Manager
{
public:
    President(Manager *manager, string name) :Manager(manager, name) {}
    void DealWithRequest(string name, int num)
    {
        if (num < 200000) //副总经理可以处理20万元
        {
            cout << "总经理" << m_name << "审批采购单：" << name << "，采购金额：" << num << "元" << endl << endl;
        }
        else
        {
            cout << "总经理" << m_name << "无法处理，召开职工大会处理" << endl;
            m_manager->DealWithRequest(name, num);
        }
    }
};
class Congress : public Manager
{
public:
    Congress(Manager *manager, string name) :Manager(manager, name) {}
    void DealWithRequest(string name, int num)  //职工可以处理大于20万元的采购单
    {
        cout << "职工大会" << m_name << "审批采购单：" << name << "，采购金额：" << num << "元" << endl << endl;
    }
};
//主函数
int main()
{
    Manager *congress = new Congress(NULL, ""); //设置上级，职工大会没有上级
    Manager *president = new President(congress, "zongjingli"); //设置上级
    Manager *vicepresident = new VicePresident(president, "fuzongjingli"); //设置上级
    Manager *commonmanager = new CommonManager(vicepresident, "bumenjingli"); //设置上级
    Manager *director = new Director(commonmanager, "zhuren"); //设置上级
    director->DealWithRequest("01", 5000);   //主任张三审批采购单,如若不能处理，逐级往上10001为采购单编号，5000为采购金额
    director->DealWithRequest("02", 40000);
    director->DealWithRequest("03", 80000);
    director->DealWithRequest("04", 190000);
    director->DealWithRequest("05", 800000);
    delete director; 
    delete commonmanager; 
    delete vicepresident; 
    delete president; 
    delete congress;
    return 0;
}