From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: output of enumeration types
Date: Tue, 19 Apr 2005 10:11:18 +0200
Date: 2005-04-19T10:10:47+02:00 [thread overview]
Message-ID: <15pwvzp0ylx7c.10c1ko7bmvzxs$.dlg@40tude.net> (raw)
In-Reply-To: d42d6g$2tcj$1@news2.ipartners.pl
On Tue, 19 Apr 2005 09:49:41 +0200, Szymon Guz wrote:
> Dmitry A. Kazakov napisaďż˝(a):
>> On Tue, 19 Apr 2005 00:04:04 +0200, Staszek Goldstein wrote:
>>
>>>I have got the following problem: having defined
>>>type roman_digit is ('I','V','X','L','C','D','M');
>>>type roman_number is array (positive range <>) of roman_digit;
>>
>> But Roman number is not an array of letters. As others have pointed out 'I'
>> is not a digit. It can represent or not a decimal position depending on the
>> context. For example in 'XIII', the "digits" are 'X' and 'III'. Anyway it
>> should rather be:
>>
>> type Roman_Number is range 1..3999;
>
> Well, I can't see your point, why 1..3999 ?
Because Romans knew neither zero nor negative numbers and 3999 is the
maximal number that can be represented using I,V,X,L,C,D,M: 3999=MMMCMXCIX.
Honestly I don't know how they managed to build a great empire with that!
(:-))
[ http://www.dmitry-kazakov.de/ada/strings_edit.htm contains an
implementation of Roman numbers I/O. ]
--
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de
next prev parent reply other threads:[~2005-04-19 8:11 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-18 22:04 output of enumeration types Staszek Goldstein
2005-04-18 22:35 ` Larry Kilgallen
2005-04-18 22:43 ` Staszek Goldstein
2005-04-18 23:35 ` Staszek Goldstein
2005-04-19 0:07 ` Stephen Leake
2005-04-19 0:43 ` Staszek Goldstein
2005-04-19 4:56 ` Martin Krischik
2005-04-19 18:57 ` Jeffrey Carter
2005-04-20 0:40 ` Staszek Goldstein
2005-04-20 1:38 ` Jeffrey Carter
2005-04-19 0:33 ` Larry Kilgallen
2005-04-19 0:51 ` Staszek Goldstein
2005-04-19 23:40 ` Stephen Leake
2005-04-20 0:17 ` Staszek Goldstein
2005-04-20 9:53 ` Dmitry A. Kazakov
2005-04-20 23:16 ` Stephen Leake
2005-04-19 0:59 ` Staszek Goldstein
2005-04-19 1:54 ` Robert A Duff
2005-04-19 3:03 ` Larry Kilgallen
2005-04-19 10:34 ` output and digits Staszek Goldstein
2005-04-20 13:56 ` Robert A Duff
2005-04-20 19:53 ` Staszek Goldstein
2005-04-19 3:04 ` output of enumeration types Steve
2005-04-19 7:31 ` Dmitry A. Kazakov
2005-04-19 7:49 ` Szymon Guz
2005-04-19 8:11 ` Dmitry A. Kazakov [this message]
2005-04-19 11:26 ` Marius Amado Alves
2005-04-19 12:56 ` Dmitry A. Kazakov
2005-04-19 13:57 ` Marius Amado Alves
2005-04-19 16:05 ` Larry Kilgallen
2005-04-19 17:55 ` Georg Bauhaus
2005-04-19 21:39 ` Florian Weimer
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