#include <iostream>
using namespace std;

// Product

class AbstractProduct {
public:
 virtual ~AbstractProduct() { }
 virtual void Operation() = 0;
};

class ProductA :public AbstractProduct {
public:
 void Operation() {
 cout << "ProductA Operation" << endl;
 }
};

class ProductB :public AbstractProduct {
public:
 void Operation() {
 cout << "ProductB Operation" << endl;
 }
};

// Factory

class AbstractFactory {
public:
 virtual ~AbstractFactory() { }
 virtual AbstractProduct* CreateProductA() = 0;
 virtual AbstractProduct* CreateProductB() = 0;
};

class ConcreteFactory :public AbstractFactory {
public:
 AbstractProduct* CreateProductA() {
 return new ProductA();
 }

 AbstractProduct* CreateProductB() {
 return new ProductB();
 }
};

int main() {
 AbstractFactory *factory = new ConcreteFactory();
 AbstractProduct* productA = factory->CreateProductA();
 AbstractProduct* productB = factory->CreateProductB();
 productA->Operation();
 productB->Operation();

 delete factory;
 delete productA;
 delete productB;

 return 0;
}