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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: Beginning Ada Programming, by Andrew T. Shvets (2020)
Date: Tue, 03 Dec 2019 14:39:21 +0000
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Xref: reader01.eternal-september.org comp.lang.ada:57633
Date: 2019-12-03T14:39:21+00:00
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AdaMagica <christ-usch.grein@t-online.de> writes:

> Define a type for values you can read from a foldable meter rod (0 to
> 2 m).
>
> type Length is digits  4   range 0.0 .. 2.000;  -- Meter
> type Length is delta 0.001 range 0.0 .. 2.000;
>
> A meter rod allows one millimeter as maximal precision:
> Floating point or fixed point number.
>
> What's difficult to grasp here?

I think what's difficult to grasp is the need for such a type. Nothing
wrong with

   float len;

or, for the more enlightened,

   typedef float length;
   ...
   length len;

:-) :-)