Re: loop and constraint error- I really nead help for this problem thanks

["alan walkington" <walky@netmagic.net>]

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>         v_pommes : float range 0.0..50.0; --Pour indiquer les bornes de 0
� 50
change to:
>         v_pommes : float ;
then

loop
   es_reels.get(v_pommes);--Pour obtenir la quantite de pommes
   if v_pommes in 0.0 .. 50.0 then
       .... do your stuff
  else
    text_io.put_line("your entry is out of range -- try again");
  end if;
end loop;

Alan Walkington
walky@netmagic.net

Kas_le_chat wrote in message <36216FD1.6D9D@attcanada.net>...
>Kas_le_chat wrote:
>>
>> I am new to ADA and I have a program to do in this langage at school.
>> In this projet I have to get a quantity between 0 and 50.From that
>> quantity I have to distribute it in some variables depending on a
>> certain range.When i am out of that fiel 0..50 the program end whit
>> constraint error, but I nead it to loop to the get variable and dont
>> know how to do this.If you got any answers it will be welcome. Thanks.
>> This is the code I am working whit:
>> With text_io;
>> use text_io;
>>
>>         procedure pomme is
>>
>>         package es_reels is new text_io.float_io(float);
>>         --------d�clation des constantes-----------------------
>>         c_5kg :constant float := 5.0;
>>         c_10kg:constant float := 10.0;
>>         c_20kg:constant float := 20.0;
>>
>>         ---------d�claration des variables----------------------
>>
>>         v_pommes : float range 0.0..50.0; --Pour indiquer les bornes de 0
� 50
>> kg;
>>         v_pomme1 : float; --de o � 5 kg, n�cessaire au calcul du prix;
>>         v_pomme2 : float; --de 05 � 10 kg, n�cessaire au calcul du prix;
>>         V_pomme3 : float; --de 10 � 20 kg, n�cessaire au calcul du prix;
>>         v_pomme4 : float; --de 20 � 50 kg, n�cessaire au calcul du prix;
>>
>>     ---------exeptions--------------------------------------
>>     e_exeption: exception;
>>
>>                 begin
>>
>>
>>                 text_io.put("Entrez la quantitee de pomme, MINIMUM 0 et
MAXIMUM 50 Kg:
>> ");
>>         es_reels.get(v_pommes);--Pour obtenir la quantite de pommes
>>         text_io.skip_line;
>>
>>
>>         if
>>                                 ((0.0 < v_pommes) and (v_pommes <=
float(5.0))) then v_pomme1 :=
>> v_pommes; v_pomme2 := 0.0; v_pomme3 := 0.0;v_pomme4 := 0.0;
>>
>>         elsif
>>                                 ((05.0 < v_pommes) and (v_pommes <=
10.0)) then v_pomme2 := v_pommes
>> - c_5kg;
>>                                 v_pomme1 := 5.0; v_pomme3 := 0.0;
v_pomme4 := 0.0;
>>
>>
>>         elsif
>>                                 ((10.0 < v_pommes) and (v_pommes <=
20.0)) then v_pomme3:= v_pommes
>> - c_10kg;
>>                                 v_pomme2 := 5.0; v_pomme1 := 5.0;
v_pomme4 := 0.0;
>>
>>
>>         elsif
>>                                 ((20.0 < v_pommes) and (v_pommes <=
50.0)) then v_pomme4 := v_pommes
>> - c_20kg;
>>                                 v_pomme3 := 10.0; v_pomme2 := 5.0;
V_pomme1 := 5.0;
>>
>>         end if;
>>
>>             exception when e_exeption =>
>>                 if ((v_pommes < float(0.0)) or (v_pommes >
>> float(50.0)))then  -- condition, la quantite de pomme doit etre plus
>> grande que 0.0 et plus petite que 50.
>>
>>                 text_io.put("La quantit� de pomme n'est pas comprise
>> entre 0 et 50 kg. ");loop
>>
>>
>>  end loop;
>> end if;
>>
>>                                 --------Sortie--------------------
>>
>>                                 text_io.put("pomme1=  ");
>>                                 es_reels.put (item=>V_pomme1);
>>                                 text_io.skip_line;
>>
>>                                 text_io.put("pomme2=  ");
>>                                 es_reels.put (item=>V_pomme2);
>>                                 text_io.skip_line;
>>
>>                                 text_io.put("pomme3=  ");
>>                                 es_reels.put (item =>V_pomme3);
>>                                 text_io.skip_line;
>>
>>                                 text_io.put("pomme4=  ");
>>                                 es_reels.put (item =>V_pomme4);
>>                                 text_io.skip_line;
>>
>>
>>
>>                                 end pomme;