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From: mike@peregrine.UUCP (Mike Wexler)
Newsgroups: net.lang.c
Subject: Re:  Boolean Operators Slighted in C
Message-ID: <392@peregrine.UUCP>
Date: Tue, 27-May-86 18:19:47 EDT
Article-I.D.: peregrin.392
Posted: Tue May 27 18:19:47 1986
Date-Received: Fri, 30-May-86 04:58:02 EDT
References: <822@brl-smoke.ARPA>
Reply-To: mike@peregrine.UUCP (Mike Wexler)
Organization: Peregrine Systems, Irvine, Ca
Lines: 27
Keywords: if boolean integer
Summary: finding integer expression used in an if statement

In article <822@brl-smoke.ARPA> rbj@icst-cmr (Root Boy Jim) writes:
>	Boolean quantities form an important abstract data type distinct from
>	counters, sets, real numbers, etc.  By not making the distinction,
>	the language encourages usage errors, the most notorious being
>		if ( a = b )
>			stuff;
>
>True. It is easily found tho.
             ------
How do I easily find these?
Given the following pseudocode fragment
	 int xyz(parameter1,parameter2)
	{
	...
		if (big_expression_1=big_expression_2) statement;
	...
	}
Where the "=" should be a "==" and the function is producing unexpected
results how would you easily track down this failure.  By easily I mean
more easily than compiling the program and noticing the error about using
an arithmetic expression where a boolean one was supposed to be.  If this
isn't what you meant by easily, what did you mean?
-- 
Mike Wexler
Email address:(trwrb|scgvaxd)!felix!peregrine!mike
Tel Co. address: (714)855-3923
;-) Internet address: ucivax@ucbvax.BERKELY.EDU!ucivax%felix!mike@peregrine :-(