C++ 工厂方法模式

#include<iostream>
using namespace std;

class car//抽象类
{
    public:
        virtual void construct() = 0;
        
};

class BMW:public car
{
    public:
        void construct()
        {
            cout<<"造一辆宝马汽车"<<endl;
        }
};

class BENZ:public car
{
    public:
        void construct()
        {
            cout<<"造一辆奔驰汽车"<<endl;
        }
};

class AODI:public car
{
    public:
        void construct()
        {
            cout<<"造一辆奥迪汽车"<<endl;
        }
};

class factory //负责生产具体的产品
{
    public:
        virtual car * create() = 0;
        
};

class BMWF:public factory
{
    public:
        car * create()
        {
            return new BMW;
        }
};

class BENZF:public factory
{
    public:
        car * create()
        {
            return new BENZ;
        }
};

class AODIF:public factory
{
    public:
        car * create()
        {
            return new AODI;
        }
};

int main()
{
    // car * c = new BMW;
    // c->construct();//汽车类本身去造车子，耦合度太高
    // delete c;

    // c = new BENZ;
    // c->construct();
    // delete c;

    // car * c;
    // factory *f = new factory;//创建一个工厂
    // c = f->ceratBENZ();//工厂造车
    // c->construct();//显示汽车
    // delete c;
    // delete f;

    // c = f->ceratBMW();//工厂造车
    // c->construct();//显示汽车

    // c = f->ceratAODI();//工厂造车
    // c->construct();//显示汽车

    // delete c;
    // delete f;

    car *c ;
    factory * f = new BMWF;//选择不同的工厂
    c = f->create();
    c->construct();

    f = new BENZF;
    c = f->create();
    c->construct();

    f = new AODIF;
    c = f->create();
    c->construct();

    delete f;
    delete c;
    

    return 0;
}