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From: "Matthew Heaney" <mheaney@on2.com>
Newsgroups: comp.lang.ada
Subject: Re: Characters and Numerics
Date: Wed, 5 Dec 2001 14:24:08 -0500
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"Wes Groleau" <wgroleau@usa.com> wrote in message
news:3C0E6D91.43FEE78F@usa.com...
> If C = 'Z' the former will raise constraint error;
> the latter will assign N a large number.

But he stated as a precondition that C is a digit character.  The algorithm
I provided is only guaranteed to satisfy its postcondition if the
precondition is satisfied.