Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!uwm.edu!rpi!batcomputer!lijewski
From: lijewski@batcomputer.tn.cornell.edu (Mike Lijewski)
Newsgroups: comp.lang.c++
Subject: Re: inline member functions returning a enumerated type
Message-ID: <10589@batcomputer.tn.cornell.edu>
Date: 27 Jul 90 19:26:04 GMT
References: <1851@island.uu.net> <GLENN.90Jul26170701@huxley.bitstream.com> <1990Jul27.083837.2078@cerc.utexas.edu>
Reply-To: lijewski@tcgould.tn.cornell.edu (Mike Lijewski)
Distribution: na
Organization: Cornell National Supercomputer Facility
Lines: 46

In article <1990Jul27.083837.2078@cerc.utexas.edu> lynch@cerc.utexas.edu (Tom Lynch) writes:
 
>In this case 'id' is already an enum type, so adding the 'enum' in 
>front of it is erroneous.  Also, one should not place the extra 'struct' in
>front of structure types.

Adding an "extra" enum (or any typename for that matter) is not erroneous.
In fact, there are cases in C++ programming (see appended example) where
you are be forced to write 'enum id' instead of just 'id'.

>p309 of The C++ Programming Language by Bjarne Strouistup, r14,
>Differences from C:
>  "The name of a class or enumeration is a type name"

Very true.  But unlike C, typenames and non-type names are in the same
name space C++.  So sometimes you must use the typename explicitely to
differentiate between a typename and non-type name.
  
>of the same book, Note to C Programmers
>"The better on knows C, the harder it seems to avoid writing C++ in
> C style ..." 
>
>tom
>lynch@cerc.utexas.edu

If you're going to post quotes from books, please use E&S.

/****** EXAMPLE ******/

enum S { A, B, C };

int
main()
{
    int S;
    S s;  // this is an error; must be 'enum S s;'

    return 0;
}


-- 
Mike Lijewski  (H)607/277-0394 (W)607/254-8686
Cornell National Supercomputer Facility
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