From: John English <je@bton.ac.uk>
Subject: Re: Simple Ada question
Date: 2000/05/18
Date: 2000-05-18T09:23:43+00:00 [thread overview]
Message-ID: <3923B647.82A765D4@bton.ac.uk> (raw)
In-Reply-To: wccn1lq5x0d.fsf@world.std.com
Robert A Duff wrote:
>
> reinert@ola.npolar.no (Reinert Korsnes) writes:
>
> > n,I : Integer;
> >...
> > for I in 1 .. 10_000_000 loop
>
> > Why it says "I is never assigned a value" ?
>
> You have two different I's. The first one is never assigned a value,
> and not used in any way. The 'for' loop declares a new I, which hides
> the outer I.
I've seen enough students fall over this one that I wonder if a
compiler warning should be issued if the loop index has the same
name as a variable in the enclosing scope...
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John English | mailto:je@brighton.ac.uk
Senior Lecturer | http://www.it.bton.ac.uk/staff/je
Dept. of Computing | ** NON-PROFIT CD FOR CS STUDENTS **
University of Brighton | -- see http://burks.bton.ac.uk
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next prev parent reply other threads:[~2000-05-18 0:00 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <8f8fm5$de5$1@news.uit.no>
2000-05-16 0:00 ` Simple Ada question Gisle S�lensminde
2000-05-16 0:00 ` Jeff Carter
2000-05-16 0:00 ` Robert A Duff
2000-05-18 0:00 ` John English [this message]
2000-05-21 0:00 ` Robert Dewar
[not found] ` <Pine.A41.3.96-heb-2.07.1000521193502.30412B-100000@pluto.mscc.huji.ac.il>
2000-05-22 0:00 ` John English
2000-05-22 0:00 ` Ehud Lamm
2000-05-22 0:00 ` David C. Hoos, Sr.
2000-05-16 0:00 ` tmoran
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