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Newsgroups: comp.lang.ada
Date: Thu, 31 Dec 2015 18:47:37 -0800 (PST)
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Subject: Re: New to Ada, why these warning messages?
From: David Botton <david@botton.com>
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Xref: news.eternal-september.org comp.lang.ada:28968
Date: 2015-12-31T18:47:37-08:00
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> gnatarr2.adb:24:04: warning: variable "I" is never read and never 
> assigned

Correct the I in line 24 at the procedure scope is neve used

> gnatarr2.adb:54:08: warning: for loop implicitly declares loop 
> variable

In Ada when you use for the var you choose is local to the for loop

> gnatarr2.adb:54:08: warning: declaration hides "I" declared at line 24

So this new I hides the I in line 24 and the compiler is helping you to understand this.

> But I do not understand the warning messages.  What's wrong with
> the definition of I: Integer; on line 24?

Nothing you just never use it only the brand new I in your for loop.

David Botton