/in/foo.cc: In function 'int main()':
/in/foo.cc:31:17: warning: array subscript has type 'char' [-Wchar-subscripts]
    result[++lenr]=c;
                 ^
/in/foo.cc: In function 'bool finish(int, int, int)':
/in/foo.cc:23:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^