C++ //多态案例三 ---电脑组装

 

 

//多态案例三 ---电脑组装

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

//抽象不同零件类
//抽象CPU类

class CPU
{
public:
    //抽象的计算函数
    virtual void calculate() = 0;





};
//抽象显卡类
class VideoCard
{
public:
    //抽象的显示函数
    virtual void display() = 0;





};

//抽象内存条类
class Memory
{
public:
    //抽象的存储函数
    virtual void storage() = 0;





};


//电脑类
class Computer
{
public:
    Computer(CPU* cpu, VideoCard* vc, Memory* mem)
    {
        m_cpu = cpu;
        m_mem = mem;
        m_vc = vc;
    }

    //提供工作的函数
    void work()
    {

        //让零件工作起来，调用接口
        m_cpu->calculate();

        m_vc->display();

        m_mem->storage();
    }

    //提供析构函数 释放3个电脑零件
    ~Computer()
    {
        //释放CPU零件
        if (m_cpu != NULL)
        {
            delete m_cpu;
            m_cpu = NULL;
        }
        //释放显卡零件
        if (m_vc != NULL)
        {
            delete m_vc;
            m_vc = NULL;
        }
        //释放内存零件
        if (m_mem != NULL)
        {
            delete m_mem;
            m_mem = NULL;
        }

    }

private:

    CPU* m_cpu;            //CPU的零件指针
    VideoCard* m_vc;    //显卡的零件指针
    Memory* m_mem;        //内存条零件指针


};
//具体厂商
//Intel 厂商

class IntelCPU :public CPU
{
public:
    virtual void calculate()
    {
        cout << "Intel的CPU开始计算了" << endl;
    }
};

class IntelVideoCard :public VideoCard
{
public:
    virtual void display()
    {
        cout << "Intel的显卡开始显示了" << endl;
    }
};

class IntelMemory :public Memory
{
public:
    virtual void storage()
    {
        cout << "Intel的内存条开始储存了" << endl;
    }
};


//Lenovo厂商
class LenovoCPU :public CPU
{
public:
    virtual void calculate()
    {
        cout << "Lenovo的CPU开始计算了" << endl;
    }
};

class LenovoVideoCard :public VideoCard
{
public:
    virtual void display()
    {
        cout << "Lenovo的显卡开始显示了" << endl;
    }
};

class LenovoMemory :public Memory
{
public:
    virtual void storage()
    {
        cout << "Lenovo的内存条开始储存了" << endl;
    }
};

void test01()
{
    //第一台电脑的零件
    cout << "创建第一台电脑" << endl;
    CPU* intelCpu = new IntelCPU;
    VideoCard* intelCard = new IntelVideoCard;
    Memory* intelMem = new IntelMemory;

    //创建第一台电脑
    Computer* computer1 = new Computer(intelCpu,intelCard,intelMem);
    computer1->work();
    delete computer1;

    //delete intelCpu;
    //delete intelCard;
    //delete intelMem;

    //第二台电脑的组装

    //CPU* lenovoCpu = new LenovoCPU;
    //VideoCard* lenovoCard = new  LenovoVideoCard;
    //Memory* lenovoMem = new  LenovoMemory;


    //Computer* computer2 = new Computer(lenovoCpu, lenovoCard, lenovoMem);
    //computer2->work();
    //delete computer2;
    cout << "*************************************"<<endl;
    cout << "创建第二台电脑" << endl;
    
    //第二台电脑的组装
    Computer* computer2 = new Computer(new  LenovoCPU, new  LenovoVideoCard, new  LenovoMemory);
    computer2->work();
    delete computer2;


    cout << "*************************************" << endl;
    cout << "创建第三台电脑" << endl;

    //第二台电脑的组装
    Computer* computer3 = new Computer(new  LenovoCPU, new IntelVideoCard, new  LenovoMemory);
    computer3->work();
    delete computer3;




}

int main()
{

    test01();


    system("pause");

    return 0;

}