Compilare: user.cpp: In member function ‘void Evaluator::pushOperator(char)’: user.cpp:66:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] while ( priority[ c ] <= priority[ ops.top() ] ) ^ user.cpp:66:58: warning: array subscript has type ‘char’ [-Wchar-subscripts] while ( priority[ c ] <= priority[ ops.top() ] ) ^ user.cpp: In constructor ‘Evaluator::Evaluator()’: user.cpp:75:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] priority[stopLabel] = 0; ^ user.cpp:82:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] priority[c] = _digit; ^ user.cpp: In member function ‘int Evaluator::evaluate(char*)’: user.cpp:92:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] if ( priority[*poz] != _digit ){ ^ user.cpp:97:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] while ( priority[*poz] == _digit ){ ^