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=-0.9 required=5.0 tests=BAYES_00,FORGED_GMAIL_RCVD,
	FREEMAIL_FROM autolearn=no autolearn_force=no version=3.4.4
X-Google-Thread: 103376,6bee08c26af9486d
X-Google-Attributes: gid103376,domainid0,public,usenet
X-Google-Language: ENGLISH,ASCII
Path: 
 g2news1.google.com!postnews.google.com!b1g2000hsg.googlegroups.com!not-for-mail
From: mockturtle <framefritti@gmail.com>
Newsgroups: comp.lang.ada
Subject: Re: Learning Ada but missing the basics?
Date: Mon, 30 Jun 2008 14:18:04 -0700 (PDT)
Organization: http://groups.google.com
Message-ID: <be473d92-aaf2-4235-8dc1-4e4bacda54c8@b1g2000hsg.googlegroups.com>
References: 
 <85e95c57-07c3-42eb-b9b9-eac5fd3d0d65@i76g2000hsf.googlegroups.com>
	<lziqvq1xqs.fsf@stalkings.ghoti.net>
 <c287aa77-8392-4176-b6b0-c021d0190d36@z72g2000hsb.googlegroups.com>
NNTP-Posting-Host: 62.101.126.216
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
X-Trace: posting.google.com 1214860685 10989 127.0.0.1 (30 Jun 2008 21:18:05
 GMT)
X-Complaints-To: groups-abuse@google.com
NNTP-Posting-Date: Mon, 30 Jun 2008 21:18:05 +0000 (UTC)
Complaints-To: groups-abuse@google.com
Injection-Info: b1g2000hsg.googlegroups.com; posting-host=62.101.126.216;
	posting-account=9fwclgkAAAD6oQ5usUYhee1l39geVY99
User-Agent: G2/1.0
X-HTTP-UserAgent: Opera/9.27 (X11; Linux i686; U; en),gzip(gfe),gzip(gfe)
Xref: g2news1.google.com comp.lang.ada:967
Date: 2008-06-30T14:18:04-07:00
List-Id: <comp.lang.ada>

On Jun 30, 10:38=A0pm, ryan k <r...@ryankaskel.com> wrote:
> On Jun 30, 4:19=A0pm, Keith Thompson <ks...@mib.org> wrote:
>
>
>
> > ryan k <r...@ryankaskel.com> writes:
> > > I'm trying to learn Ada because a) I think it's cool to learn new
> > > computer languages and b) it looks like a good one. I've gone the
> > > through a lot of the tutorials but lets say have package MyPackage and=

> > > 5 subprograms are in the body. Which procedure is run first? Is it
> > > sequential?
>
> > None of them will run unless they're called.
>
> > > =A0 =A0 =A0 =A0 =A0 =A0 Is there some sort of equivalent to C's main()=
?
>
> > Not exactly. =A0There's no special name for the entry point. =A0You
> > specify it when you link the program.
>
> > > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 Is a
> > > binary created for every package?
>
> > That depends on what you mean by "a binary". =A0There typically won't be=

> > an executable created for each package. =A0An Ada package is similar in
> > some ways to a separately compiled C source file; you can combine
> > several of them, along with a procedure that's specified to be the
> > main program, into a single program. =A0The details of how you do this
> > are defined by each implementation, not by the language.
>
> > > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 I =
guess I don't understand where
> > > things start and end. Any help or links are greatly appreciated!
>
> > --
> > Keith Thompson (The_Other_Keith) ks...@mib.org =A0<http://www.ghoti.net/=
~kst>
> > Nokia
> > "We must do something. =A0This is something. =A0Therefore, we must do th=
is."
> > =A0 =A0 -- Antony Jay and Jonathan Lynn, "Yes Minister"
>
> I use the GNAT compiler. How then do I specify the main procedure?
>
> Thanks.

I remember I had the same problem when I began... ;-)

Just write a file some_name.adb with a procedure some_name in it.
When you use

        gnatmake some_name

GNAT will take care of all the dependencies and will create
an executable file "some_name".  When you run it, the procedure
some_name will be executed.
(BTW, is not this great? No *#$% Makefiles...)

For example, here it is the typical "Hello World"

-- BEGIN File hello_world.adb
with Text_Io;

procedure Hello_World is
begin
  Text_Io.Put_Line("Hello World!");
end Hello_World;
-- END File hello_world.adb

Disclaimer: I wrote the code above "on the fly" and I did not
check if it compiles, although it should...