From: "David C. Hoos, Sr." <david.c.hoos.sr@ada95.com>
Subject: Re: Exception problem
Date: 1997/02/19
Date: 1997-02-19T00:00:00+00:00 [thread overview]
Message-ID: <01bc1e5e$a43929a0$148c71a5@dhoossr.iquest.com> (raw)
In-Reply-To: 330A0D25.313@fs2.assist.uci.edu
The problem is that when Text_IO.Data_Error is raised in this circumstance,
the pointer in the input stream is backed up to where it was before the
Int_IO.Get was called. Therefore, if you want to skip over this
non-numeric data in the input stream, you should call Text_IO.Skip_Line
just after the line:
Put_Line ("Entry must be a number. Try again.");
Incidentally, Ada is much more civilized than C++. We don't "throw"
things. Exceptions are simply "raised."
One other point about your code. Instantiations of generics (e.g.,
Text_IO.Integer_IO) for commonly used types are better placed at the
Library level, so all parts of your program can use the same instantiation.
Depending on the compiler/binder/linker used, code for multiple identical
instantations may or may not share the code.
--
David C. Hoos, Sr.,
http://www.dbhwww.com
http://www.ada95.com
Larry Coon <larry@fs2.assist.uci.edu> wrote in article
<330A0D25.313@fs2.assist.uci.edu>...
> Ada beginner here...
>
> The intent of the following code is to loop until valid input is
> provided:
>
next prev parent reply other threads:[~1997-02-19 0:00 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
1997-02-18 0:00 Exception problem Larry Coon
1997-02-18 0:00 ` Michael Feldman
1997-02-19 0:00 ` Larry Coon
1997-02-19 0:00 ` Keith Allan Shillington
1997-02-19 0:00 ` Joerg Rodemann
1997-02-19 0:00 ` Mats Weber
1997-02-19 0:00 ` David C. Hoos, Sr. [this message]
1997-02-19 0:00 ` Robert Dewar
1997-02-19 0:00 ` Larry Coon
1997-02-22 0:00 ` Arthur Evans Jr
1997-02-24 0:00 ` Larry Coon
1997-02-24 0:00 ` Larry Kilgallen
1997-02-24 0:00 ` Larry Coon
1997-02-25 0:00 ` Fergus Henderson
1997-02-25 0:00 ` Do-While Jones
1997-03-09 0:00 ` John Volan
1997-03-09 0:00 ` Robert Dewar
1997-03-12 0:00 ` Keith Thompson
1997-02-25 0:00 ` Robert I. Eachus
replies disabled
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox