责任链模式-C++实现

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

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

//request
class Request
{
public:
	int m_nNumber;
};

//manager
class Manager
{
protected:
	string m_strName;
	Manager* manager;

public:
	Manager(string temp) { m_strName = temp; }
	void SetSuccessor(Manager* temp) { manager = temp; }
	virtual void GetRequest(Request* request) = 0;
};

//经理
class CommonManager : public Manager
{
public:
	CommonManager(string temp) :Manager(temp) {}
	virtual void GetRequest(Request *request);

};

void CommonManager::GetRequest(Request *request)
{
	if (request->m_nNumber >= 0 && request->m_nNumber < 1000)
	{
		cout << m_strName << " deal " << request->m_nNumber << endl;
	}
	else
	{
		manager->GetRequest(request);
	}
}

//总监
class Majordomo : public Manager
{
public:
	Majordomo(string temp) :Manager(temp) {}
	virtual void GetRequest(Request *request)
	{
		if (request->m_nNumber <= 5000)
		{
			cout << m_strName << " deal " << request->m_nNumber << endl;
		}
		else
		{
			manager->GetRequest(request);
		}
	}

};

//总经理

class GeneralManager : public Manager
{
public:
	GeneralManager(string temp) :Manager(temp) {}
	virtual void GetRequest(Request *request)
	{
		cout << m_strName << " deal " << request->m_nNumber << endl;
	}

};



int main()
{
	Manager *common = new CommonManager("张经理");
	Manager *major = new Majordomo("李总监");
	GeneralManager *general = new GeneralManager("赵总");
	common->SetSuccessor(major);
	major->SetSuccessor(general);

	Request *rq = new Request();
	rq->m_nNumber = 999;
	common->GetRequest(rq);

	rq->m_nNumber = 4999;
	common->GetRequest(rq);

	rq->m_nNumber = 6000;
	common->GetRequest(rq);

	delete rq;
	delete major;
	delete common;
	delete general;

    return 0;
}