Command_Line question

["Peter I. Hansen" <pih@oek.dk>]

Hello

I'm new to Ada95, and I'm trying to write a program which needs to read 
arguments from the command line. I found out that the Command_Line 
package is the way to go, but something i don't get. for example if I 
have this code :

WITH Ada.Text_IO;
WITH Ada.Command_Line;
WITH Ada.Integer_Text_IO;

PROCEDURE Test IS

Num : Natural ;
NumLength : Natural ;

BEGIN -- Test
   Ada.Integer_text_IO.Get( From => Ada.Command_Line.Argument(Number => 1),
                            Item => Num,
                            Last => NumLenght);
   Ada.Integer_Text_IO.Put(Item => Num);

END Test;

The question is : Is there a way to do this whitout the 'NumLength' 
variable, or is this just the way things work ?

/Peter