foo.cc: In function 'int main()':
foo.cc:9:38: error: expected ';' before 'case'
    9 |                 case 1:cout<<"Monday"
      |                                      ^
      |                                      ;
   10 |                 case 2:cout<<"Tuesday"
      |                 ~~~~                  

[Hydro](https://hydro.ac)提供评测服务