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Path: utzoo!watmath!clyde!burl!ulysses!allegra!alan
From: alan@allegra.UUCP (Alan S. Driscoll)
Newsgroups: net.unix-wizards
Subject: Re: getc() != EOF
Message-ID: <2499@allegra.UUCP>
Date: Wed, 30-May-84 15:05:43 EDT
Article-I.D.: allegra.2499
Posted: Wed May 30 15:05:43 1984
Date-Received: Sat, 2-Jun-84 07:17:40 EDT
References: <30@utastro.UUCP>, <307@basser.SUN>
Organization: AT&T Bell Laboratories, Murray Hill
Lines: 14

> ... Char variables are promoted to int in expressions (see C manual)
> and a char -1 is IDENTICAL with an int -1. Unsigned char c could be
> different...

"Whether or not sign-extension occurs for characters is machine
dependent, but it is guaranteed that a member of the standard
character set is non-negative."

	-- C Reference Manual, September 1980

-- 

	Alan S. Driscoll
	AT&T Bell Laboratories