Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!mnetor!uunet!ukma!nrl-cmf!ames!hao!oddjob!gargoyle!ihnp4!homxb!mtuxo!mtune!codas!usfvax2!pdn!pdnbah!reggie
From: reggie@pdnbah.UUCP (George Leach)
Newsgroups: comp.lang.c
Subject: Re: How are local vars allocated?
Message-ID: <1818@pdn.UUCP>
Date: Tue, 24-Nov-87 08:14:36 EST
Article-I.D.: pdn.1818
Posted: Tue Nov 24 08:14:36 1987
Date-Received: Sat, 28-Nov-87 10:38:29 EST
References: <9367@mimsy.UUCP> <1633@megatest.UUCP> <1987Nov22.085210.20641@sq.uucp>
Sender: usenet@pdn.UUCP
Reply-To: reggie@pdnbah.UUCP (George Leach)
Organization: Paradyne Corporation, Largo, Florida
Lines: 32

In article <1987Nov22.085210.20641@sq.uucp> msb@sq.UUCP (Mark Brader) writes:
>There have been several followups regarding the code:
 
>	for (;;) {
>		int k;
>		...
>	}
 
>but I think they have each either left out an important point, or wandered
>at length into side issues.  So let me try.

      [stuff deleted concerning allocation and deallocation of the variable
k and what might actually be implemented by a compiler.......

>But the value of "k" is NOT guaranteed to be retained from one iteration
>to the next, and you must not assume it will be.  If you want that, you
>have to declare "k" in a larger scope including the for-header.

    Or you can declare it static:

 	for (;;) {
 		static int k;
                ^^^^^^
 		...
 	}



George W. Leach					Paradyne Corporation
{gatech,rutgers,attmail}!codas!pdn!reggie	Mail stop LF-207
Phone: (813) 530-2376				P.O. Box 2826
						Largo, FL  34649-2826