Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!dali.cs.montana.edu!caen!sol.ctr.columbia.edu!emory!hubcap!ncrcae!ncr-sd!se-sd!cns!dltaylor
From: dltaylor@cns.SanDiego.NCR.COM (Dan Taylor)
Newsgroups: comp.sys.amiga.programmer
Subject: Re: Is this valid C?
Message-ID: <936@cns.SanDiego.NCR.COM>
Date: 6 May 91 21:40:26 GMT
References: <1991May5.222328.16225@csis.dit.csiro.au>
Organization: NCR Corp. SE-San Diego
Lines: 25

In <1991May5.222328.16225@csis.dit.csiro.au> dave@csis.dit.csiro.au (David Campbell) writes:

>Is this valid C?

Doesn't look right to me.  You have declared the struct (as extern) before
you have defined it (the description just below).

>extern struct thing t;

>struct thing {
>	int n;
>	char *s;
>};

Then you proceed to use a structure tag "t", in main(), that is either not
properly defined, or declared, depending on what the complier does with the
previous conflict.

Where does the compiler choke?

By the way, try running that through "lint".  It isn't perfect, but I've
found a few common typos, and more than a few definition/declaration
errors using it.

Dan Taylor