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From: Alex Krol <Alex_Krol@scitex.com>
Subject: Re: Programming language vote - results
Date: 1997/11/23
Message-ID: <34787311.47F8@scitex.com>#1/1
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Reply-To: Alex_Krol@scitex.com
Organization: Scitex_Corporation_LTD.
Newsgroups: comp.lang.ada,comp.lang.apl,comp.lang.c,comp.lang.c++
Date: 1997-11-23T00:00:00+00:00
List-Id: <comp.lang.ada>


Terry Richards wrote:
> Guys,
> As far as I can remember,
> neither C or C++ guarantees that the clauses in a condition will be
> evaluated in the order you wrote them. IOW,
> 
> if (call_this() || call_that());
> 
> could compile as if it where written:
> 
> if (call_that() || call_this());
> 
> which could have different results.

  No, you are wrong. The Standard guarantees that in
 (expr1 || expr2)
expr2 would be evaluated if and only if expr1 is evaluated to 0;
in (expr1 && expr2)
expr2 would be evaluated if and onty if expr1 is evaluated to non-zero.
 To guarantee this, order of evaluation must be guaranteed also.
This is true both for C and C++.

	Regards,
		Alex Krol