工厂模式实现-优快云博客

本文通过一个具体的工厂模式实例，展示了如何使用C++实现不同类型的帮助者对象创建过程。该实例中定义了抽象基类CLeiFeng及两个派生类CHelperA与CHelperB，并通过工厂接口IFactory来获取这些派生类的对象实例。

#include <iostream>

using namespace std;
class CLeiFeng
{
public:
	virtual ~CLeiFeng()
	{
	}
	virtual void cook()
	{
	}
	virtual void clean()
	{
	}
	virtual void laundry()
	{
	}
};
class CHelperA:public CLeiFeng
{
public:
	void cook()
	{
		cout<<"Helper cook"<<endl;
	}
	void clean()
	{
		cout<<"Helper clean"<<endl;
	}
	void laundry()
	{
		cout<<"Helper laundry"<<endl;
	}
};
class CHelperB:public CLeiFeng
{
public:
	void cook()
	{
		cout<<"HelperB cook"<<endl;
	}
	void clean()
	{
		cout<<"HelperB clean"<<endl;
	}
	void laundry()
	{
		cout<<"HelperB laundry"<<endl;
	}
};
class IFactory
{
public:
	virtual ~IFactory()
	{

	}
	virtual CLeiFeng *GetFactory()
	{
		return NULL;
	}
};
class CHelperAFactory:public IFactory
{
public:
	CLeiFeng *GetFactory()
	{
		return new CHelperA;
	}
};
class CHelperBFactory:public IFactory
{
public:
	CLeiFeng *GetFactory()
	{
		return new CHelperB;
	}
};

int main()
{
	IFactory *factory = new CHelperBFactory();
	factory->GetFactory()->cook();
	return 0;
}

/******本功能实现学雷锋帮人做家务******/

打印结果：

HelperB cook