From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: String literals and wide_string literals - how?
Date: Fri, 20 Apr 2007 22:41:35 +0200
Date: 2007-04-20T22:40:24+02:00 [thread overview]
Message-ID: <ra78ml24abuc.wtzenxqfdc1j.dlg@40tude.net> (raw)
In-Reply-To: 1177099260.665252.323030@l77g2000hsb.googlegroups.com
On 20 Apr 2007 13:01:00 -0700, Adam Beneschan wrote:
> On Apr 20, 12:16 pm, "Randy Brukardt" <r...@rrsoftware.com> wrote:
>
>> Now throw in some operator overloading:
>>
>> function "+" (Left, Right : Roman_Numeral) return Roman_Numeral;
>>
>> and you can work solely in Roman_Numerals.
>
> It would be an interesting challenge to write this function---without
> cheating. That is, without resorting to converting the operands to
> regular integers, adding them the normal way, and converting the
> result back. No, no, no. Do it the way the Romans would have had to
> do it. Might make for a good programming exercise.
Not that hard, Ada has loop in reverse. I think that for summation, even
one character look-ahead is not actually needed (for IV, IX, XL etc stuff).
One should postpone flushing the last "decimal" place before recognizing
the next one, so that gone astray I, X, C could be subtracted from it.
> And then, if someone gets this right, tell them to implement "*".
Romans used abacus for that, they cheated! (:-))
--
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de
next prev parent reply other threads:[~2007-04-20 20:41 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-20 10:07 String literals and wide_string literals - how? Gerd
2007-04-20 14:33 ` Adam Beneschan
2007-04-20 14:55 ` Robert A Duff
2007-04-20 19:16 ` Randy Brukardt
2007-04-20 20:01 ` Adam Beneschan
2007-04-20 20:41 ` Dmitry A. Kazakov [this message]
2007-04-20 20:02 ` Robert A Duff
2007-05-21 2:33 ` David Thompson
2007-05-22 22:32 ` Randy Brukardt
2007-05-23 18:42 ` Jeffrey R. Carter
[not found] ` <f324h5$fna$1@f04n12.cac.psu.edu>
2007-05-24 21:15 ` Jeffrey R. Carter
2007-05-23 2:27 ` Keith Thompson
2007-07-01 1:00 ` David Thompson
2007-05-23 12:28 ` brian.b.mcguinness
2007-04-20 20:48 ` Dmitry A. Kazakov
2007-04-20 22:09 ` Jeffrey R. Carter
2007-04-21 9:41 ` Simon Wright
2007-04-22 0:35 ` Jeffrey R. Carter
2007-04-22 9:45 ` Simon Wright
2007-04-22 20:15 ` Jeffrey R. Carter
2007-04-22 21:18 ` Simon Wright
2007-04-23 1:44 ` Jeffrey R. Carter
2007-04-22 1:00 ` Robert A Duff
2007-04-20 14:58 ` Georg Bauhaus
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