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Date: Mon, 06 Dec 2004 12:49:31 +0100
From: Adrien Plisson <aplisson-news@stochastique.net>
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Newsgroups: comp.lang.ada
Subject: Re: how can i allocate an objekt with initialization???
References: <covegl$qvq$04$1@news.t-online.com>
 <3459883.9H2ke8dEzz@linux1.krischik.com> <wvbry8gboi7r.fsf@sun.com>
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Date: 2004-12-06T12:49:31+01:00
List-Id: <comp.lang.ada>

Ole-Hjalmar Kristensen wrote:
> You are confused. You can use inheritance and virtual functions in C++
> as well without using pointers:

you are confused too... see below.

> int main(int argc, char *argv[])
> {
>   b my_b(1);
>   c my_c(2);
> 
>   test(my_b);
>   test(my_c);
> 
>   return 0;
> }

your complete example is valid (though a little bit off-topic), but the OP was 
trying to declare a variable which can hold any object from the class hierarchy 
FATHER_CLASS and initialize it with a CHILD_CLASS object.

the corresponding C++ example should have been:

int main(int argc, char *argv[])
{
   a &my_object = b(1);
   my_object.f();

   return 0;
}

note: Martin Krischik was noting that in Ada we can avoid pointers/references 
to do this, unlike in C++. our 2 examples just confirm that (plus it does not 
help much...).

-- 
rien