Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!cornell!uw-beaver!apollo!mrst!sdti!turner
From: turner@sdti.UUCP (Prescott K. Turner)
Newsgroups: comp.lang.c++
Subject: Re: Overload virtual functions?
Summary: Yes.
Message-ID: <316@sdti.UUCP>
Date: 27 Oct 88 02:29:00 GMT
References: <1215@tuhold>
Reply-To: turner@sdti.UUCP (Prescott K. Turner, Jr.)
Organization: Software Development Technologies, Sudbury MA
Lines: 22

In article <1215@tuhold>, hoelling@tuhold (Wolfgang Hoellinger) writes:
>  > sorry, not implemented: virtual derived::f1() overloaded in base 
>    class but not in derived class
> 
> Is there any way to define an overloaded virtual function?
> Is this a problem of C++ or just a problem of my compiler?

Yes, it is OK to define an overloaded virtual function.  My copy of
cfront gives the same message in response to your program.  The
program will compile OK if
        void f1(int);
is defined in class 'derived'.

The warning relates to the fact that redefining any 'f1' in a derived
class suppresses all variants of 'f1' from the base class.  Amazingly,
while this feature operates on all variants simultaneously, the
virtual aspect of a member function operates on each variant individually.
--
Prescott K. Turner, Jr.
Software Development Technologies, Inc.
375 Dutton Rd., Sudbury, MA 01776 USA        (508) 443-5779
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