Path: utzoo!attcan!uunet!mcsun!mcvax!hp4nl!botter!star.cs.vu.nl!roemer
From: roemer@cs.vu.nl (Roemer Lievaart)
Newsgroups: comp.lang.c
Subject: and then was comma
Message-ID: <3038@solo1.cs.vu.nl>
Date: 22 Aug 89 23:31:22 GMT
References: <63244@linus.UUCP> <2300@oakhill.UUCP> <2650@aplcen.apl.jhu.edu> <20348@sequent.UUCP>
Organization: V.U. Informatica, Amsterdam, the Netherlands
Lines: 26

paulr@sequent.UUCP (Paul Reger) writes:

>Considering the construction:

>while ((ch = getchar()) != EOF && ch != '\n')

>Is there any assurance in any C standard that the left expression will
>always be evaluated first, with the right following it ?? [ ... ] 

>I'm from Ada-land where such problems are handled by the 'and then'
>clause.

Ada first made 'and', like in Pascal, then found out that the '&&' operator
of C was also a very good thing and thus introduced the 'and then' operator,
which is identical to C's &&.

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____________________________________________________________________________
Roemer B. Lievaart | 	Fact is: nature can do without man.
Amsterdam, Holland | 	Man can't do without nature.
roemer@cs.vu.nl    | 		-- Tom van Ewijk