Another problems of newbie

["maxsio ;D" <maxsio@wp.pl>]

I need to write some program and I have problems with it. This program 
should read text file, write words to array, sort them and than write to 
another text file. In one book I found way how to read only singel char so I 
thought it would be easy to link singel char and rest part of final word, 
but I was wrong. I've written this subprogram (this program is reading from 
keyboard, but with files is similar so...) :
*
procedure chars is
   word : string(1..31);
   char : character;

begin
   for i in 1..30 loop
     Get(char);
     word:=word&(string(char));
   end loop;
   Put(word);
   delay 10.0;
end chars;
*
but after first letter program generate constraint error. And second problem 
which I have is sorting array with words. To sort array I've choosen 
QuickSort, but I don't know totally how to use it in Ada. I was searching in 
Google, but I found only QuickSort with pointers. Unfortunately I don't 
understand how to use them good ind this algorithm. If anybody could explain 
usage of pointers in this algorithm or write QuickSort without pointers I'd 
be grateful.
Sorry for my poor English and thanks in advance. Greetings

maxsio
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