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From: "Alex R. Mosteo" <devnull@mailinator.com>
Newsgroups: comp.lang.ada
Subject: Re: range in ascii
Date: Thu, 31 Mar 2005 13:23:43 +0200
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Date: 2005-03-31T13:23:43+02:00
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Anders Wirzenius wrote:
> mieville@mac.com writes:
> 
> 
>>Hi all, I now have my code to count frequency of letters in a text but
>>I do not know how to read the command "enter" after I write my text.
>>What I have now is CTRL+Q but of course is not an elegant solution and
>>I know there is something easy but I cannot find it. Here below is my
>>code if someone could help me in that single question I would be
>>grateful. many thanks - sibyl
>>
>>with Text_Io;
>>use Text_Io;
>>
>>with Ada.Integer_Text_Io;
>>use Ada.Integer_Text_Io;
>>
>>procedure Comptelettretest is
>>
>>   Char , char2 : Character;
>>   cod: integer ;
>>   subtype Lettre is Integer range 20..255;
>>   type Freq_Lettre is array (Lettre) of Integer;
>>   Count : Freq_Lettre:= (others => 0);
>>
>>begin
>>
>>   Put_Line ("Entrer un text au choix et le terminer par 'CTRL/Q' et
>>'enter' ");
>>   loop
> 
> 
>         Get_Immediate (Char);
>         Put (Char);
>         --  Get (Char)

Mmmmm, what about the old Get_Line? Isn't it just the thing to use for 
enter-finished inputs?

You'll get a string instead of a character, but iterating over its 
characters is just as easy.

> 
> 
>>      Get(Char);
>>
>>      --how to escape from this instruction, I want to hit enter and
>>have the list.
> 
> 
>         exit when Char = ASCII.CR;  --  Works at least on Windows
> 
> 
> 
>>      exit when Char = ASCII.DC1;
>>      cod := CHARACTER'POS(CHAR);
>>      if cod in Lettre then
>>         Count(cod) := Count (cod) +1;
>>      end if;
>>   end loop;
>>
>>New_Line;
>>   Put_Line("Frequence des lettres");
>>   New_Line;
>>   for cod in Lettre loop
>>      char2 := CHARACTER'VAL(cod);
>>      Put(char2);
>>      put(Count(cod));
>>      New_Line;
>>  end loop;
>>   
>>end Comptelettretest;
> 
> 
> Anders