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From: gwyn@smoke.brl.mil (Doug Gwyn)
Newsgroups: comp.lang.c
Subject: Re: Is there a good example of how toupper() works?
Message-ID: <14439@smoke.brl.mil>
Date: 12 Nov 90 13:52:06 GMT
References: <152580@felix.UUCP> <1990Nov7.043705.15051@robot.in-berlin.de> <1990Nov12.040933.5419@sq.sq.com>
Organization: U.S. Army Ballistic Research Laboratory, APG, MD.
Lines: 5

In article <1990Nov12.040933.5419@sq.sq.com> msb@sq.sq.com (Mark Brader) writes:
>Now, isascii() itself is not in ANSI C.

It doesn't need to be.  All values of unsigned char, as well as EOF,
work just fine as is*() arguments.