1 #include
     
       2 using namespace std; 3 #define vi virtual 4 class abstractdrink{ 5     public: 6         //煮水  7         vi void Boil() = 0; 8         //冲泡 9         vi void Brew() = 0;10         //倒入杯中11         vi void Pourincup() = 0;12         //添加辅料13         vi void Addsomething() = 0;14         void makeDrink()15         {16             Boil();17             Brew();18             Pourincup();19             Addsomething();20         } 21 };22 23 class Coffee:public abstractdrink{24         void Boil() {25             cout << "煮开水" << endl; 26         }27         //冲泡28          void Brew() {29              cout << "冲泡咖啡" << endl; 30          }31         //倒入杯中32          void Pourincup() {33              cout << "倒入杯中" << endl;34          }35         //添加辅料36          void Addsomething(){37              cout << "添加牛奶和糖" << endl; 38          }39 };40 41 class Tea:public abstractdrink{42         void Boil() {43             cout << "煮开水" << endl; 44         }45         //冲泡46          void Brew() {47              cout << "冲泡茶叶" << endl; 48          }49         //倒入杯中50          void Pourincup() {51              cout << "倒入杯中" << endl;52          }53         //添加辅料54          void Addsomething(){55              cout << "添加枸杞" << endl; 56          }57 };58 void dowork(abstractdrink *abs)59 {60     abs->makeDrink();61     delete abs;62 }63 void test()64 {65     dowork(new Coffee);66     cout << "---------->" << endl;67     dowork(new Tea);68 } 69 70 int main()71 {72     test();73     return 0;74 }