Prototype Pattern

prototype 模式结构图：

实现：

#ifndef _PROTOTYPE_H_
#define _PROTOTYPE_H_

class Prototype
{
public:
    virtual ~Prototype();
    virtual Prototype* Clone() const = 0;

protected:
    Prototype();

private:
};

class ConcretePrototype:public Prototype
{
public:
    ConcretePrototype();
    ConcretePrototype(const ConcretePrototype& cp);
    ~ConcretePrototype();
    Prototype* Clone()const;
protected:
private:
};

#endif

#include "Prototype.h"
#include <iostream>
using namespace std;

Prototype::Prototype()
{

}
Prototype::~Prototype()
{

}
Prototype* Prototype::Clone()const
{
    return 0;
}
ConcretePrototype::ConcretePrototype()
{

};
ConcretePrototype::~ConcretePrototype()
{

}
ConcretePrototype::ConcretePrototype(const ConcretePrototype& cp)
{
    cout<<"ConcretePrototype copy..."<<endl;
}
Prototype* ConcretePrototype::Clone()const
{
    return new ConcretePrototype(*this);
}