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From: "James S. Rogers" <jimmaureenrogers@worldnet.att.net>
Subject: Re: nextc, getc and ungetc
Date: 1999/02/03
Message-ID: <798gq5$lfr@bgtnsc02.worldnet.att.net>#1/1
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References: <798dvo$loq$1@netra.msu.montana.edu>
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Newsgroups: comp.lang.ada
Date: 1999-02-03T00:00:00+00:00
List-Id: <comp.lang.ada>

There is no equivalent to ungetc in the Ada.Text_IO package.
The equivalent to getc is the get procedure for type character.
The way you read the next character without advancing the file pointer
is the procedure Look_Ahead.

Jim Rogers
Colorado Springs, Colorado

Jeremy D. Mullin wrote in message <798dvo$loq$1@netra.msu.montana.edu>...
> I am writing a scanner in Ada and was wondering if there was a "peek"
>function I could use to get a char from the input file but not move the
>file pointer. I found definitions for nextc, getc and ungetc in the
>text_io package but they are private declarations.
> Does anyone know of the package/methods I should be using or of any
>resources on the web that might help me?
>
> TIA,
>  J.D.
>--