一 典型工厂方法模式（Factory Method）结构图

二 典型工厂模式实现

测试代码

#include <iostream>
using namespace std;
 
class Product{
public:
    string name;
    virtual void show(){
        cout << "我是:";
    }
};
class Desk : public Product
{
public:
    Desk(){
        name = "桌子";
    }
    void show(){
        Product::show();
        cout << name  << endl;
    }
};
 
class Cup : public Product
{
public:
    Cup(){
        name = "杯子";
    }
    void show(){
        Product::show();
        cout << name  << endl;
    }
};
class IFactory{
public:
    virtual Product* createProduct() = 0;
};
 
class DeskFactory : public IFactory{
public:
    Product* createProduct(){
        return new Desk();
    }
};
class CupFactory : public IFactory{
public:
    Product* createProduct(){
        return new Cup();
    }
};
 
int main()
{
    IFactory *ifactory = new DeskFactory();
    Product *product = ifactory->createProduct();
    product->show();
 
    IFactory *ifactory_2 = new CupFactory();
    Product *product_2 = ifactory_2->createProduct();
    product_2->show();
    return 0;
}

测试结果：

我是:桌子
我是:杯子

参考：https://lkmao.blog.csdn.net/article/details/128952843