设计Weekday类 代码参考

 #include <iostream>
 
 using namespace std;
 
 class Weekday
 {
     private:
         int num;
     public:
         void SetDay(){cin>>num;return;}
         void IncDay(){num+=;if(num>) num-=;return;}
         void NowDay()
         {
             switch(num)
             {
                 case :cout<<"星期日"<<endl;break;
                 case :cout<<"星期一"<<endl;break;
                 case :cout<<"星期二"<<endl;break;
                 case :cout<<"星期三"<<endl;break;
                 case :cout<<"星期四"<<endl;break;
                 case :cout<<"星期五"<<endl;break;
                 case :cout<<"星期六"<<endl;break;
                 default:break;
             }
         }
 };
 
 int main()
 {
     Weekday one;
     one.SetDay();
     one.NowDay();
     one.IncDay();
     one.NowDay();
     one.IncDay();
     one.NowDay();
     return ;
 }