原型模式-c++实现

来源：互联网发布：如何提高淘宝店流量编辑：程序博客网时间：2024/05/19 15:21
// CplusplusPrototype.cpp : Defines the entry point for the console application.//#include "stdafx.h"#include<iostream>#include<vector>#include<string>#include<assert.h>using namespace std;//父类  class Resume{protected:char *name;public:Resume() {}virtual ~Resume() {}virtual Resume* Clone() { return NULL; }virtual void Set(char *n) {}virtual void Show() {}};class ResumeA : public Resume{public:ResumeA(const char *str);  //构造函数  ResumeA(const ResumeA &r); //拷贝构造函数  ~ResumeA();                //析构函数  ResumeA* Clone();          //克隆，关键所在  void Show();               //显示内容  };ResumeA::ResumeA(const char *str){if (str == NULL) {name = new char[1];name[0] = '\0';}else {name = new char[strlen(str) + 1];strcpy_s(name, strlen(str) + 1,str);}}ResumeA::~ResumeA() { delete[] name; }ResumeA::ResumeA(const ResumeA &r) {name = new char[strlen(r.name) + 1];strcpy_s(name, strlen(r.name) + 1, r.name);}ResumeA* ResumeA::Clone() {return new ResumeA(*this);}void ResumeA::Show() {cout << "ResumeA name : " << name << endl;}class ResumeB : public Resume{public:ResumeB(const char *str);  //构造函数  ResumeB(const ResumeB &r); //拷贝构造函数  ~ResumeB();                //析构函数  ResumeB* Clone();          //克隆，关键所在  void Show();               //显示内容  };ResumeB::ResumeB(const char *str){if (str == NULL) {name = new char[1];name[0] = '\0';}else {name = new char[strlen(str) + 1];strcpy_s(name, strlen(str) + 1,str);}}ResumeB::~ResumeB() { delete[] name; }ResumeB::ResumeB(const ResumeB &r) {name = new char[strlen(r.name) + 1];strcpy_s(name, strlen(r.name) + 1, r.name);}ResumeB* ResumeB::Clone(){return new ResumeB(*this);}void ResumeB::Show() {cout << "ResumeB name : " << name << endl;}int main(){Resume *r1 = new ResumeA("A");Resume *r2 = new ResumeB("B");Resume *r3 = r1->Clone();Resume *r4 = r2->Clone();r1->Show(); r2->Show();//删除r1,r2  delete r1; delete r2;r1 = r2 = NULL;//深拷贝所以对r3,r4无影响  r3->Show(); r4->Show();delete r3; delete r4;r3 = r4 = NULL;return 0;}
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