Article View: comp.std.c
Article #2645Re: Function Argument Evaluation
From: Jonathan Gingerich
Date: Fri, 29 Mar 1991 17:43
Date: Fri, 29 Mar 1991 17:43
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1075 bytes
In article <1991Mar28.194627.26285@mtxinu.COM> ed@mtxinu.COM (Ed Gould) writes:
>Will this do?
>
> foo() {
> int v = 1;
>
> printf("%d %d\n", v, ++v);
> }
The first argument of v reads v without using the value to set v, so this
too is undefined.
I think "order of evaluation" is a non-issue in ANSI C; 3.3 seems pretty
air-tight. Therefore the value of (l=r) is only of interest in K&R(I) were
the language is similar to (++x), so it's pretty ambiguous. ANSI C has
leap-frogged the whole issue.
Jon.
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!orion.oac.uci.edu!ucivax!ucla-cs!maui.cs.ucla.edu!jon From: jon@maui.cs.ucla.edu (Jonathan Gingerich) Newsgroups: comp.std.c Subject: Re: Function Argument Evaluation Message-ID: <1991Mar29.174345.22020@cs.ucla.edu> Date: 29 Mar 91 17:43:45 GMT References: <15607@smoke.brl.mil> <17983@crdgw1.crd.ge.com> <1991Mar28.194627.26285@mtxinu.COM> Sender: usenet@cs.ucla.edu (Mr. News Himself) Organization: UCLA Computer Science Department Lines: 18 Nntp-Posting-Host: maui.cs.ucla.edu