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From: csp@gtenmc.UUCP (Charudutta S. Palkar)
Newsgroups: comp.lang.c
Subject: Ambiguities
Message-ID: <862@gtenmc.UUCP>
Date: 11 Sep 90 18:03:25 GMT
Reply-To: csp@gtenmc.UUCP (Charudutta S. Palkar)
Organization: GTE Telecom, Inc.  Bothell, WA
Lines: 37

>
>In article <861@gtenmc.UUCP> you write:
>
>>	 b )      a = a - ( b = ( a = a + b ) - b );
>                      ^
>??? Is there any way you can guarantee the value of the marker 'a'?
>It could have (a) the value of 'a' immediately before the statement
>is executed, or (b) the value generated by innermost (a = a + b).
>
>>	 b )     a = a ^ ( b = b ^ ( a = a ^ b ));
>
>Same problem here.
>....
>
>Anders Thulin       ath@prosys.se   {uunet,mcsun}!sunic!prosys!ath

   I am aware of this , but the point I would like to raise :-

   Does C mention , which instance of the variable should be used ,
   while evaluating the expression. If neither K&R C or ANSI C
   specify it. I propose that such a standard be set, for one
   it will help removing ambiguities of evaluation ( implementation
   dependencies ).

   Some may get the impression I am for cryptic code. No I am not
   for cryptic code but for use of the language with all its features.
   If some programmers cannot use its features they might as well
   stop using it.

   C S Palkar

   csp - csp@gtenmc.gtetele.com
	 csp@gtenmc.UUCP

   " I speak only for myself "

   K&R C > ANSI C