设计模式-工厂模式

最新推荐文章于 2025-07-27 22:07:05 发布

mrliu_qy

最新推荐文章于 2025-07-27 22:07:05 发布

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分类专栏： c++基础文章标签：设计模式工厂模式

本文链接：https://blog.youkuaiyun.com/mrliu_qy/article/details/54292454

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本文通过C++代码展示了工厂模式的应用实例，利用抽象基类实现不同水果对象的创建，并通过多态调用成员函数展示对象特性。

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#include <iostream>

using namespace std;

//创建水果类
class Fruit
{
public:
    virtual void sayname() = 0;
};

class Banana : public Fruit
{
public:
    virtual void sayname(){
        cout << "i'm Banana!" << endl;
    }
};

//创建苹果类，继承水果类
class Apple : public Fruit
{
public:
    virtual void sayname(){
        cout << "i'm Apple!" << endl;
    }
};

//创建水果工厂
class AbFactory
{
public:
    virtual Fruit * GetFruit() = 0;
};


//创建香蕉工厂
class BananaFactory : public AbFactory
{
public:
    virtual Fruit * GetFruit(){
        return new Banana;
    }
};

//创建苹果工厂
class AppleFactory : public AbFactory
{
public:
    virtual Fruit * GetFruit(){
        return new Apple;
    }
};


int main()
{
    AbFactory * abfactory = new BananaFactory;
    Fruit * fruit = NULL;
    fruit = abfactory->GetFruit();
    fruit->sayname();

    delete abfactory;
    delete fruit;

    abfactory = new AppleFactory;
    fruit = abfactory->GetFruit();
    fruit->sayname();

    delete abfactory;
    delete fruit;

    return 0;

}