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From: chris@umcp-cs.UUCP (Chris Torek)
Newsgroups: net.lang.c
Subject: Re: are for loops and while loops the same thing?
Message-ID: <715@umcp-cs.UUCP>
Date: Sun, 6-Apr-86 01:30:07 EST
Article-I.D.: umcp-cs.715
Posted: Sun Apr  6 01:30:07 1986
Date-Received: Wed, 9-Apr-86 07:04:50 EST
References: <139@mit-amt.MIT.EDU>
Reply-To: chris@maryland.UUCP (Chris Torek)
Organization: University of Maryland, Dept. of Computer Sci.
Lines: 40
Summary: No.

In article <139@mit-amt.MIT.EDU> judith@mit-amt.MIT.EDU (Judith Donath)

[asks yet another `frequently asked' question; perhaps this should be
included in the net.announce.newusers section.]

>K & R, page 56:
>	"The for statement
>		for (expr1; expr2; expr3)
>			statement
>	is equivalent to
>		expr 1;
>		while (expr2) {
>			statement
>			expr3;
>		}"
>		
>Not always true.

Correct.

>K & R, page 62
>	"The continue statement... causes the next iteration of the 
>	enclosing loop (for, while, do) to begin. ..."

Note that this is in the `tutorial' part of the book, and that page
62 comes after page 56.

>Is there any reason or use for this difference in behaviour between 
>while and for?

This is the way most people believe they should behave.

>Are there any implementations in which a continue in a for loop
>passes control to the test [...] ?  

If so, those implementations are incorrect.
-- 
In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 1415)
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