抽象工廠模式針對的是產(chǎn)品族，而不是產(chǎn)品等級結(jié)構(gòu)。

產(chǎn)品族:同一產(chǎn)地或者同一產(chǎn)商，功能不同。

產(chǎn)品等級:功能相同，產(chǎn)地或者廠商不同。

代碼如下:

#include <iostream> using namespace std;class AbstractApple { public:virtual void showName() = 0; };class ChinaApple :public AbstractApple { public:virtual void showName(){cout << "中國蘋果" << endl;} };class UsaApple :public AbstractApple { public:virtual void showName(){cout << "美國蘋果" << endl;} };class JapanApple :public AbstractApple { public:virtual void showName(){cout << "日本蘋果" << endl;} };class AbstractBanana { public:virtual void showName() = 0; };class ChinaBanana :public AbstractBanana { public:virtual void showName(){cout << "中國香蕉" << endl;} };class UsaBanana :public AbstractBanana { public:virtual void showName(){cout << "美國香蕉" << endl;} };class JapanBanana :public AbstractBanana { public:virtual void showName(){cout << "日本香蕉" << endl;} };class AbstractPear { public:virtual void showName() = 0; };class ChinaPear :public AbstractPear { public:virtual void showName(){cout << "中國梨子" << endl;} };class UsaPear :public AbstractPear { public:virtual void showName(){cout << "美國梨子" << endl;} };class JapanPear :public AbstractPear { public:virtual void showName(){cout << "日本梨子" << endl;} };class AbstractFactory { public:virtual AbstractApple *CreateApple() = 0;virtual AbstractBanana *CreateBanana() = 0;virtual AbstractPear *CreatePear() = 0; };class ChinaFactory :public AbstractFactory { public:virtual AbstractApple *CreateApple(){return new ChinaApple;}virtual AbstractBanana *CreateBanana(){return new ChinaBanana;}virtual AbstractPear *CreatePear(){return new ChinaPear;} };class UsaFactory :public AbstractFactory { public:virtual AbstractApple *CreateApple(){return new UsaApple;}virtual AbstractBanana *CreateBanana(){return new UsaBanana;}virtual AbstractPear *CreatePear(){return new UsaPear;} };class JapanFactory :public AbstractFactory { public:virtual AbstractApple *CreateApple(){return new JapanApple;}virtual AbstractBanana *CreateBanana(){return new JapanBanana;}virtual AbstractPear *CreatePear(){return new JapanPear;} };void test01() {AbstractFactory *factory = nullptr;AbstractApple *apple = nullptr;AbstractBanana *banana = nullptr;AbstractPear *pear = nullptr;factory = new ChinaFactory;apple = factory->CreateApple();banana = factory->CreateBanana();pear = factory->CreatePear();apple->showName();banana->showName();pear->showName();//與構(gòu)造的順序相反，倒著deletedelete pear;delete banana;delete apple;delete factory; }int main() {test01();return 0; }

測試結(jié)果:

總結(jié)

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