From: "John R. Strohm" <strohm@airmail.net>
Subject: Re: FILE IO Error?
Date: Wed, 19 Dec 2001 02:24:36 -0800
Date: 2001-12-19T02:24:36-08:00 [thread overview]
Message-ID: <46C4E4AF1E2947D6.C031C44B4DC72DB1.3C8E5CB9537AFF9A@lp.airnews.net> (raw)
In-Reply-To: 3C1FC17F.B47D5CA8@mindspring.com
Just because you are programming in Ada doesn't mean you can ignore the
basics of debugging.
Add some text_io.put calls, to see what you're reading.
As coded, you appear to be planning on reading PRECISELY 8*(8+1+4) = 104
characters from your file. You appear not to be expecting separators after
the second name in record i and the first name in record i+1, and you appear
not to be expecting any kind of record breaks.
Is this what you were planning on doing?
"Ray" <yarzepol@mindspring.com> wrote in message
news:3C1FC17F.B47D5CA8@mindspring.com...
> I am reading in some data from a file and despite reading in the data
> successfully, I get this ADA.IO_EXCEPTIONS'CHILD_UNIT.END_ERROR which
> means I am trying to read past the EOF. Can someone explain why I get
> this error or what I am not seeing?
>
> thanks,
>
> Ray
>
>
> --------------------------------------------------------------------------
---
> PROCEDURE load_data IS
>
> data_file : file_type;
> value : character;
>
> BEGIN
>
> open (data_file, in_file, "file.dat");
>
> IF NOT end_of_file (data_file) THEN
> FOR i IN 1 .. 8 LOOP
>
> -- Read in 8 character name.
> FOR j IN 1 .. 8 LOOP
> get (data_file, value);
> label_1 (i) (j) := value;
> END LOOP;
>
> -- Eat delimiter character.
> get (data_file, value);
>
> -- Read in 4 character name.
> FOR j IN 1 .. 4 LOOP
> get (data_file, value);
> label_2 (i) (j) := value;
> END LOOP;
>
> END LOOP;
> END IF;
>
> close (data_file);
>
> END load_data;
>
> --------------------------------------------------------------------------
---
next prev parent reply other threads:[~2001-12-19 10:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-18 22:21 FILE IO Error? Ray
2001-12-19 10:24 ` John R. Strohm [this message]
2001-12-19 10:25 ` Preben Randhol
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