foo.cc: In function 'void CwAcw()':
foo.cc:11:29: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   11 |                         if(s='B')
      |                            ~^~~~
foo.cc: In function 'int main()':
foo.cc:41:49: error: expected ';' before 'break'
   41 |                         case 'C':case 'D':LvPd()break;
      |                                                 ^~~~~
      |                                                 ;

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