prototype原型（待完善）

2024-10-16 19:24:32

模式：prototype 解决向量的深浅克隆

#pragma once

#ifndef _PROTOTYPE_H_

#define _PROTOTYPE_H_

class Prototype{

public:

virtual ~Prototype();

virtual Prototype* Clone() const = 0;

virtual void showData() = 0;

virtual void addOne() = 0;

protected:

Prototype();

public:

int *p;

};

class ConcretePrototype :public Prototype{

public:

ConcretePrototype();

ConcretePrototype(const ConcretePrototype& cp);

~ConcretePrototype();

Prototype* Clone() const;

void showData();

void addOne();

};

#endif //~_PROTOTYPE_H_

#include "prototype.h"

//Prototype.cpp

#include "Prototype.h"

#include <iostream>

using namespace std;

Prototype::Prototype(){

}

Prototype::~Prototype(){

}

Prototype* Prototype::Clone() const{

return 0;

}

ConcretePrototype::ConcretePrototype(){

this->p = new int[5];

for (int i = 0; i < 5; i++)

p[i] = i;

}

ConcretePrototype::~ConcretePrototype(){

delete[] p;

}

ConcretePrototype::ConcretePrototype(const ConcretePrototype& cp){

cout << "ConcretePrototype copy ..." << endl;

//浅赋值

this->p = cp.p;

//深赋值

/*this->p = new int[5];

int i;

for(i = 0; i < 5;i++)

this->p[i] = cp.p[i];*/

}

Prototype* ConcretePrototype::Clone() const{

return new ConcretePrototype(*this);

}

void ConcretePrototype::showData()

{

int i;

cout << "<";

for (i = 0; i < 2; i++)

cout <<p[i] << ",";

cout << ">";

}

void ConcretePrototype::addOne()

{

int i;

for (i = 0; i < 2; i++)

p[i] += 10;

}

#include "Prototype.h"

#include <iostream>

using namespace std;

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

Prototype* p = new ConcretePrototype();

Prototype* p1 = p->Clone();

cout << "Before:" << endl;

cout << "p:";

p->showData();

cout << endl;

cout << "p1:";

p1->showData();

cout << endl;

p1->addOne();

cout << "After:" << endl;

cout << "p:";

p->showData();

cout << endl;

cout << "p1:";

p1->showData();

cout << endl;

system("pause");

cin.get();

return 0;

}

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