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From: halvin@acf4.nyu.edu (halvin)
Subject: Re: ANSI C and POSIX (was Re: C/C++ knocks the crap out of Ada)
Date: 1996/04/10
Message-ID: <4kgjrc$4d@news.nyu.edu>#1/1
X-Deja-AN: 146803128
references: <dewar.828846122@schonberg> <828903511snz@genesis.demon.co.uk>
organization: New York University
newsgroups: comp.lang.ada,comp.lang.c,comp.lang.c++,comp.edu
Date: 1996-04-10T00:00:00+00:00
List-Id: <comp.lang.ada>

Lawrence Kirby <fred@genesis.demon.co.uk> writes:

>>Consider for example, also answering your question about ANSI being
>>a misleadng guide to portability, the return type of sprintf. I don't
>>have SPEC1170 on hand, but it is a good guess that it is ANSI compliant
>>here (return type int), but BSD heritage unices (like SunOS) return
>>char *.

>In any ANSI compiler/library sprintf returns int. Tell me of any modern
>system which doesn't make the correct functionality available in a library,
>if not the default. These days this is a non-issue with regards to
>portability (even considering Sun systems).

this might be slightly off-topic, but isn't there a difference between the
ANSI and POSIX versions of fprintf? if i remember correctly, the ANSI version
returns 0 on success and EOF on failure -- but the POSIX version returns the
number of characters printed, or a negative number to indicate failure.

so which behavior should one expect in an ANSI C application that happens
to run in a POSIX-compliant environment? a student stumbled upon this issue,
and i didn't really have an answer, as i had thought that POSIX was a proper
superset of ANSI C.