[Gambas-user] Unending cycle "For...Next" with variable As Byte

[Ru Vuott]

Thank you, nando, for your contribution.





--- Mar 2/10/12, nando <nando_f at ...951...> ha scritto:

> Da: nando <nando_f at ...951...>
> Oggetto: Re: [Gambas-user] Unending cycle "For...Next" with variable As Byte
> A: "mailing list for gambas users" <gambas-user at lists.sourceforge.net>
> Data: Martedì 2 ottobre 2012, 07:38
> When using Byte data type
> 
> The loop iteration when j=255 is 255 + 1 = 0
> 
> Thus, the end condition of j>255 can never happen
> It is an endless loop.
> This 'problem' is correct operation for the datatype used.
> This issue arises always at the boundary of the datatype
> when math takes it beyond the possible range.
> 
> 
> ---------- Original Message -----------
> From: Ru Vuott <vuott at ...325...>
> To: gambas-user at lists.sourceforge.net
> Sent: Sun, 30 Sep 2012 15:57:56 +0100 (BST)
> Subject: [Gambas-user] Unending cycle "For...Next" with
> variable As Byte
> 
> > Hello,
> > 
> > maybe I'm in the clouds.... but I don't understand why
> this cycle:
> > 
> > **********
> > Public Sub Button1_Click()
> > 
> >   Dim j As Byte
> > 
> >   For j = 0 To 255
> > 
> >    Print j
> > 
> >   Next
> > 
> > End
> > **********
> > 
> > runs "ad infinitum" !
> > 
> > Regards
> > vuott
> > 
> >
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> ------- End of Original Message -------
> 
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