Re: DATA_ERROR exception problem

[seas.gwu.edu!mfeldman@uunet.uu.net (Michael Feldman)]

In article <EACHUS.92Nov4202155@oddjob.mitre.org> eachus@oddjob.mitre.org (Robe
rt I. Eachus) writes:
>
>   The proper solution is to call Skip_Line after each call to Get,
>unless your user interface specification permits more than one integer
>value per line.  In that case you can either do a Skip_Line on error,
>or read into a String, and parse "by hand" when invalid input is
>encountered.  (I really suggest in any case throwing the queued input
>away when an error is encountered, but especially in an introductory
>class!)
>
Yep. That's how most of us teach it. Interestingly, many students - even
freshmen - want to know if there's a better way, so that input data can
be "batched" on a line. If they've studied strings yet, I tell them about
the "read it into a string" solution, let 'em know it's possible, and
go back to the Skip_Line thing.

Mike Feldman
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Michael B. Feldman
co-chair, SIGAda Education Committee

Professor, Dept. of Electrical Engineering and Computer Science
School of Engineering and Applied Science
The George Washington University
Washington, DC 20052 USA
(202) 994-5253 (voice)
(202) 994-5296 (fax)
mfeldman@seas.gwu.edu (Internet)

"Americans wants the fruits of patience -- and they want them now."
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