Re: Address and bit mask

[Georg Bauhaus <rm.dash-bauhaus@futureapps.de>]

On 30.08.11 18:08, milouz wrote:

> But, let me develop...
> In C, it's rather easy to know how to do something because 1/ the
> langage is so simple and 2/ there are some many helpful resources

(The C language is perceivied to be simple, when it isn't:
what's the C type of 60*60*24? How do size_t and unsigned
long int differ? This is one reason why there are so many CVEs...)

Ada learning material:

http://www.it.bton.ac.uk/staff/je/adacraft/contents.htm

http://www.adaic.org/learn/materials/

A K&R of Ada, with extensions for Ada 95 and Ada 2005:

http://archive.adaic.com/standards/83rat/html/ratl-03.html
http://www.adaic.org/resources/add_content/standards/95rat/rat95html/rat95-p1-2.html
http://www.adaic.org/resources/add_content/standards/05rat/html/Rat-TTL.html

An introduction for programmers:
http://www.adaic.org/wp-content/uploads/2010/05/Ada-Distilled-10-Sept-2009.pdf


> In Ada, I found nothing similar and even finding howto do a kind of
> 'printf("%x"...)'... hum, sorry... displaying an Integer in hexa, is
> difficult.

How do you print an int in duodecimal (base 12) in C? :-)

Base 16 and others in Ada:

with Ada.Text_IO;

procedure Int_Based is
   use Ada;

   package Duodec_IO is
      new Text_IO.Integer_IO (Natural);

   X : Natural := 123;
begin
   Duodec_IO.Put (X, Base => 3);
   Duodec_IO.Put (X, Base => 8);
   Duodec_IO.Put (X, Base => 10);
   Duodec_IO.Put (X, Base => 12);
   Duodec_IO.Put (X, Base => 16);
   Text_IO.New_Line;
end Int_Based;