Date: Tue, 22 Feb 2005 15:21:33 +0100 From: des@des.no (=?iso-8859-1?q?Dag-Erling_Sm=F8rgrav?=) To: Giorgos Keramidas <keramida@ceid.upatras.gr> Cc: Kathy Quinlan <kat-free@kaqelectronics.dyndns.org> Subject: Re: Error in my C programming Message-ID: <86is4kad5e.fsf@xps.des.no> In-Reply-To: <20050221165951.GA2124@gothmog.gr> (Giorgos Keramidas's message of "Mon, 21 Feb 2005 18:59:51 %2B0200") References: <4218B960.1050403@kaqelectronics.dyndns.org> <20050220183219.GK57256@cirb503493.alcatel.com.au> <4218DEC5.1080600@kaqelectronics.dyndns.org> <20050221065844.GB81063@cirb503493.alcatel.com.au> <4219C912.2070207@kaqelectronics.dyndns.org> <20050221165951.GA2124@gothmog.gr>
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Giorgos Keramidas <keramida@ceid.upatras.gr> writes: > The quotations seem a bit messed up, so I don't know if Peter Jeremy or > Kathy Quinlan wrote the above paragraph. Whoever the author was though, > it may be worth to note that C99 *does* allow single-line comments > delimited by //. which leads to the following code being well-formed and well-defined in both C89 and C99 but having different semantics... #include <stdio.h> int main(void) { int a, b, c; a =3D 10; b =3D 2; c =3D a //* oops! */ -b; switch (c) { case 8: printf("C99 or C++\n"); break; case -5: printf("C89\n"); break; default: printf("can't happen\n"); break; } return 0; } This is actually documented in the C99 rationale. DES --=20 Dag-Erling Sm=F8rgrav - des@des.no
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