装饰模式
软件设计 石家庄铁道大学信息学院
实验11:装饰模式
本次实验属于模仿型实验,通过本次实验学生将掌握以下内容:
1、理解装饰模式的动机,掌握该模式的结构;
2、能够利用装饰模式解决实际问题。
[实验任务一]:手机功能的升级
用装饰模式模拟手机功能的升级过程:简单的手机(SimplePhone)在接收来电时,会发出声音提醒主人;而JarPhone除了声音还能振动;更高级的手机(ComplexPhone)除了声音、振动外,还有灯光闪烁提示。
实验要求:
1. 提交类图;
2. 提交源代码;
#include <iostream> using namespace std; class Phone { public: virtual void receiveCall(){}; }; class SimplePhone:public Phone { public: virtual void receiveCall(){ cout<<"声音提示"<<endl; } }; class PhoneDecorator:public Phone { protected: Phone *phone; public: PhoneDecorator(Phone *p) { phone=p; } virtual void receiveCall() { phone->receiveCall(); } }; class JarPhone:public PhoneDecorator{ public: JarPhone(Phone *p):PhoneDecorator(p){} void receiveCall() { phone->receiveCall(); cout<<"震动提示"<<endl; } }; class ComplexPhone:public PhoneDecorator{ public: ComplexPhone(Phone *p):PhoneDecorator(p){} void receiveCall() { phone->receiveCall(); cout<<"灯光闪烁提示"<<endl; } }; int main() { Phone *p1=new SimplePhone(); p1->receiveCall(); cout<<endl; Phone *p2=new JarPhone(p1); p2->receiveCall(); cout<<endl; Phone *p3=new ComplexPhone(p2); p3->receiveCall(); return 0; }
3.注意编程规范。