From: Roland Thiers <roland.thiers@canl.nc>
To: help-gnu-emacs@gnu.org
Subject: Run a program
Date: Tue, 27 Sep 2011 16:28:02 +1100 [thread overview]
Message-ID: <4BB5BAB3-2D48-402A-85EF-070EEC256DB3@canl.nc> (raw)
Hi all,
I am a novice programming in Emacs Lisp.
My question :
I dit this program :
(defun coins (n)
(let ((i n) (repartition [0 0 0]) (c1 0) (c2 0) (r 0))
(while (> i 0)
(setq c1 (random 2))
(setq c2 (random 2))
(setq r (+ c1 c2))
(aset repartition r (1+ (aref repartition r)))
(setq i (- i 1)))
(message " repartition %s " repartition)))
aim : you toss two coins, count tails : 0 or 1 or 2. Repeat 10 times
or more and see what happens.
If I evaluate this program with C-x C-e and do (coins 10) C-x C-e it
works fine, I get some thing like
[3 5 2].
But if I repeat C-x C-e after (coins 10) I get some thing like [5 11
4] then [9 15 6] ...
I can't understand that !
Could some one help me ?
Roland Thiers
Noumea New Caledonia
roland dot thiers at canl dot nc
next reply other threads:[~2011-09-27 5:28 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-27 5:28 Roland Thiers [this message]
2011-09-27 21:06 ` Run a program Deniz Dogan
2011-09-28 1:43 ` Le Wang
2011-09-28 9:15 ` Roland Thiers
2011-09-28 13:44 ` Drew Adams
-- strict thread matches above, loose matches on Subject: below --
2011-09-27 22:01 Buchs, Kevin
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