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From: gwyn@smoke.BRL.MIL (Doug Gwyn)
Newsgroups: comp.lang.c
Subject: Re: Is this portable?
Message-ID: <10246@smoke.BRL.MIL>
Date: 10 May 89 13:46:23 GMT
References: <1914@plx.UUCP>
Reply-To: gwyn@brl.arpa (Doug Gwyn)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 7

In article <1914@plx.UUCP> evan@plx.UUCP (Evan Bigall) writes:
>This works on my machine, but I am curious as to whether it is "officially"
>correct and portable C.

The pointer arithmetic was okay; ptr[-1] is legal.
(The program failed to #include <stdio.h> and return a value from main(),
however.)