Path: utzoo!attcan!uunet!kddlab!titcca!sragwa!wsgw!socslgw!diamond!diamond
From: diamond@diamond.csl.sony.junet (Norman Diamond)
Newsgroups: comp.lang.c
Subject: Re: declarations in include files:  how do YOU feel?
Keywords: declarations include
Message-ID: <10246@socslgw.csl.sony.JUNET>
Date: 12 May 89 09:46:07 GMT
References: <179@larry.sal.wisc.edu> <11318@bloom-beacon.MIT.EDU> <180@larry.sal.wisc.edu>
Sender: news@csl.sony.JUNET
Reply-To: diamond@csl.sony.junet (Norman Diamond)
Organization: Sony Computer Science Laboratory Inc., Tokyo, Japan
Lines: 20

In article <180@larry.sal.wisc.edu> jwp@larry.sal.wisc.edu.UUCP (Jeffrey W Percival) writes:

>Another question on this style:  does one include lib.h in the
>subroutine files that make up lib.a?

Yes.

>That is, if lib.h contains
>an "extern char foo()" and foo.c includes lib.h and then goes
>on to define foo, is this a problem?

In K&R-I and ANSI and any non-broken compiler, it is specifically
permitted.  (Although K&R-I indirectly contradicts itself on this
point, it directly states that this is permitted.)

--
Norman Diamond, Sony Computer Science Lab (diamond%csl.sony.co.jp@relay.cs.net)
  The above opinions are my own.   |  Why are programmers criticized for
  If they're also your opinions,   |  re-implementing the wheel, when car
  you're infringing my copyright.  |  manufacturers are praised for it?