foo.cc:43:2: error: expected ';' after class definition
   43 | }
      |  ^
      |  ;
foo.cc: In function 'int main()':
foo.cc:51:15: error: 'num' was not declared in this scope; did you mean 'enum'?
   51 |         cin>> num;
      |               ^~~
      |               enum

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