量化交易之设计模式篇 - 工厂方法模式

//
// Created by win10 on 2021/11/16.
//

#include <thread>
#include <iostream>
using namespace std;

// 工厂方法模式
// 对象类部分
class LeiFeng {
public:
    virtual void work() {
        std::cout << "LeiFeng do work" << std::endl;
    }
};

class Student: public LeiFeng {
public:
    virtual void work() {
        std::cout << "Student do work" << std::endl;
    }
};

class Volunteer: public LeiFeng {
public:
    virtual void work() {
        std::cout << "Volunteer do work" << std::endl;
    }
};

// 工厂类部分
class LeiFengFactory {
public:
    static LeiFeng* createLeiFeng() {
        return new LeiFeng();
    }
};

class StudentFactory: LeiFengFactory {
public:
    static Student* createLeiFeng() {
        return new Student();
    }
};

class VolunteerFactory: LeiFengFactory {
public:
    static Volunteer* createLeiFeng() {
        return new Volunteer();
    }
};

int main() {

    StudentFactory* studentFactory = new StudentFactory();
    LeiFeng* leiFeng = studentFactory->createLeiFeng();

    leiFeng->work();

    delete leiFeng;
    delete studentFactory;

    return 0;
}