[创建型模式] Factory

Factory.h

//
//  Factory.h
//  Factory
//
//  Created by Cheney Shen on 11-2-20.
//  Copyright 2011年 __MyCompanyName__. All rights reserved.
//

#ifndef _FACTORY_H_
#define _FACTORY_H_

class Product;

class Factory
{
    public:
    virtual ~Factory();
    
    virtual Product* CreateProduct()=0;
    
    protected:
    Factory();
    
    private:
    
};

class ConcreteFactory:public Factory
{
    public:
    
    ~ConcreteFactory();
    
    ConcreteFactory();
    
    Product* CreateProduct();
    
    protected:
    
    private:
    
};

#endif //~_FACTORY_H_

Factory.cpp

//
//  Factory.cpp
//  Factory
//
//  Created by Cheney Shen on 11-2-20.
//  Copyright 2011年 __MyCompanyName__. All rights reserved.
//

#include "Factory.h"
#include "Product.h"

#include <iostream>
using namespace std;

Factory::Factory()
{
    
}

Factory::~Factory()
{
    
}

ConcreteFactory::ConcreteFactory()
{
    cout<<"ConcreteFacotry..."<<endl;
}

ConcreteFactory::~ConcreteFactory()
{
    
}

Product* ConcreteFactory::CreateProduct()
{
    return new ConcreteProduct();
}

Product.h

//
//  Product.h
//  Factory
//
//  Created by Cheney Shen on 11-2-20.
//  Copyright 2011年 __MyCompanyName__. All rights reserved.
//

#ifndef _PRODUCT_H_
#define _PRODUCT_H_

class Product
{
    public:
    virtual ~Product()=0;
    
    protected:
    Product();
    
    private:
    
    
};

class ConcreteProduct : public Product
{
    public:
    ~ConcreteProduct();  
    
    ConcreteProduct();
    
    protected:
    
    private:
    
};
#endif  // ~_PRODUCT_H_

Product.cpp

//
//  Product.cpp
//  Factory
//
//  Created by Cheney Shen on 11-2-20.
//  Copyright 2011年 __MyCompanyName__. All rights reserved.
//

#include "Product.h"

#include <iostream>
using namespace std;

Product::Product()
{
    
}

Product::~Product()
{
    
}

ConcreteProduct::ConcreteProduct()
{
    cout<<"ConcreteProduct..."<<endl;
}

ConcreteProduct::~ConcreteProduct()
{
    
}

main.cpp

//
//  main.cpp
//  Factory
//
//  Created by Cheney Shen on 11-2-20.
//  Copyright 2011年 __MyCompanyName__. All rights reserved.
//

#include "Factory.h"
#include "Product.h"

#include <iostream>
using namespace std;

int main (int argc, const char * argv[]) {

    Factory* fac = new ConcreteFactory();
    Product* p = fac->CreateProduct();
    return 0;
}