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| #include<iostream>
#include<string>
using namespace std;
class Beverage{
protected:
string description;
public:
virtual string getCost(){};
virtual string getDescription(){};
};
class MilkTea: public Beverage{
public:
string costNum;
MilkTea(){
description = "milkTea";
costNum = "￥15";
}
string getCost(){
return costNum;
}
string getDescription(){
return description;
}
};
class Decorater:public Beverage {
public:
Beverage* beverage ;
virtual string getCost(){};
virtual string getDescription(){};
Decorater(Beverage* newBeverage){
beverage = newBeverage;
}
};
class Zhenzhu:public Decorater{
public:
string costNum;
string description;
Zhenzhu(Beverage* newBeverage):Decorater(newBeverage){
costNum = "￥3";
description = " add Zhenzhu";
};
string getCost(){
return beverage->getCost()+"+"+costNum;
}
string getDescription(){
return beverage->getDescription()+description;
}
};
class Yeguo:public Decorater{
public:
string costNum;
string description;
Yeguo(Beverage* newBeverage):Decorater(newBeverage){
costNum = "￥4";
description = " add Yeguo";
};
string getCost(){
return beverage->getCost()+"+"+costNum;
}
string getDescription(){
return beverage->getDescription()+description;
}
};
int main(){
Beverage* newMilkTea = new MilkTea;
cout<<newMilkTea->getDescription()<<","<<newMilkTea->getCost()<<endl;
newMilkTea = new Zhenzhu(newMilkTea);
cout<<newMilkTea->getDescription()<<" "<<newMilkTea->getCost()<<endl;
newMilkTea = new Yeguo(newMilkTea);
cout<<newMilkTea->getDescription()<<" "<<newMilkTea->getCost()<<endl;
}
|