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From: Robert A Duff <bobduff@world.std.com>
Subject: Re: Simple Ada question
Date: 2000/05/16
Message-ID: <wccn1lq5x0d.fsf@world.std.com>#1/1
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Sender: bobduff@world.std.com (Robert A Duff)
References: <8f8fm5$de5$1@news.uit.no>
Organization: The World Public Access UNIX, Brookline, MA
Newsgroups: comp.lang.ada
Date: 2000-05-16T00:00:00+00:00
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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.

You're writing this the way you're supposed to do it in Pascal.  In Ada,
there's no need to declare the 'for' loop variable, because it's
automatically declared.  If you *do* declare a(nother) I, it will be a
completely separate variable.  If you reference the outer I after the
loop, you're refering to an uninitialized variable.

- Bob