Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.1 6/24/83; site watcgl.UUCP
Path: utzoo!watmath!watcgl!dmmartindale
From: dmmartindale@watcgl.UUCP (Dave Martindale)
Newsgroups: net.lang.c
Subject: Re: Subtle C's
Message-ID: <2462@watcgl.UUCP>
Date: Sun, 22-Apr-84 17:51:15 EST
Article-I.D.: watcgl.2462
Posted: Sun Apr 22 17:51:15 1984
Date-Received: Mon, 23-Apr-84 01:29:20 EST
References: <13900003@acf4.UUCP>
Organization: U of Waterloo, Ontario
Lines: 21

		From: lwe3207@acf4.UUCP
		Message-ID: <13900003@acf4.UUCP>
		Date: Sat, 21-Apr-84 18:30:00 EST

		Another subtle non-equivalence:

			while (a) if (b) foo; else bar;

		is not a syntax error, but is not equal to

			while (a) { if (b) foo; else bar; }


1) If they aren't equivalent, what *is* the first one equivalent to?

2) Please tell us what compiler you are using when you make statements
   such as this.

For the record, the 4.2BSD PCC-based compiler *does* treat the two
statements as equivalent, and I cannot see any other interpretation
allowed by the language.  The "else" must be part of the if statement.