foo.cc: In function 'int main()':
foo.cc:36:48: error: expected ';' before ')' token
   36 |                         case 'A':case 'B':CwAcw);break;
      |                                                ^
      |                                                ;
foo.cc:36:43: warning: statement is a reference, not call, to function 'CwAcw' [-Waddress]
   36 |                         case 'A':case 'B':CwAcw);break;
      |                                           ^~~~~
foo.cc:36:43: warning: statement has no effect [-Wunused-value]
foo.cc:37:37: error: expected ';' before ')' token
   37 |                         default:LvPd);break;
      |                                     ^
      |                                     ;
foo.cc:37:33: warning: statement is a reference, not call, to function 'LvPd' [-Waddress]
   37 |                         default:LvPd);break;
      |                                 ^~~~
foo.cc:37:33: warning: statement has no effect [-Wunused-value]

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