Why should I use the “using” keyword to access my base class method?

Question

I wrote the below code in order to explain my issue. If I comment the line 11 (with the keyword \"using\"), the compiler does not compile the file and displays this error: <

Answer 1

Surprisingly this is standard behavior. If a derived class declares a method with the same name as a method defined by the base class, the derived class' method hides the base class' one.

See C++ FAQ