In file included from main.cpp:17:0:
factory.h: In static member function 'static Object* Factory::Create(const string&)':
factory.h:58:28: error: expected type-specifier before 'Smth'
                 return new Smth(class_id);
                            ^~~~
factory.h:58:28: error: expected ';' before 'Smth'
factory.h:58:28: error: 'Smth' was not declared in this scope