From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham
	autolearn_force=no version=3.4.4
X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 103376,a88a78b31443d1a9,start
X-Google-Attributes: gid103376,public
X-Google-ArrivalTime: 2004-02-26 06:00:35 PST
Path: archiver1.google.com!postnews1.google.com!not-for-mail
From: evangeli@cnam.fr (Evangelista Sami)
Newsgroups: comp.lang.ada
Subject: in-out and out parameters
Date: 26 Feb 2004 06:00:35 -0800
Organization: http://groups.google.com
Message-ID: <5f59677c.0402260600.3c27ad66@posting.google.com>
NNTP-Posting-Host: 163.173.228.31
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 8bit
X-Trace: posting.google.com 1077804035 1294 127.0.0.1 (26 Feb 2004 14:00:35
 GMT)
X-Complaints-To: groups-abuse@google.com
NNTP-Posting-Date: Thu, 26 Feb 2004 14:00:35 +0000 (UTC)
Xref: archiver1.google.com comp.lang.ada:5847
Date: 2004-02-26T06:00:35-08:00
List-Id: <comp.lang.ada>

hello

i have this program :
====================
procedure Test is

   task T is
      entry E(I :    out Integer;
              J : in out Integer);
   end T;
   task body T is
   begin
      accept E(I :    out Integer;
               J : in out Integer) do
         I := 1;
         J := J * I;
         J := J * J;
      end E;
   end;

   I : Integer := 10;

begin
   T.E(I, I);
   Put_Line(Integer'Image(I));
end;
====================
The output is 1.
I thought that, as I and J were passed by references, when i call E
with the
same variables, I and J denote the same object. so i was expecting to
get 100 in output.
If someone had a clear explanation i would be very thankful.