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From: f.tolkamp@chello.nl
Newsgroups: comp.lang.ada
Subject: Re: How to get a key from keyboard
Date: Mon, 22 Dec 2008 08:22:51 -0800 (PST)
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Date: 2008-12-22T08:22:51-08:00
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On 1 dec, 08:28, christoph.gr...@eurocopter.com wrote:
> A.10.7
> =A0(9) procedure Get_Immediate(File : in File_Type;
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 Item : out Charac=
ter);
> =A0 =A0 =A0procedure Get_Immediate(Item : out Character);
>
> (10) Reads the next character, either control or graphic, from the
> specified File or the default input file. Mode_Error is propagated if
> the mode of the file is not In_File. End_Error is propagated if at the
> end of the file. The current column, line and page numbers for the
> file are not affected.
>
> (11) procedure Get_Immediate(File : in File_Type;
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Item : out Cha=
racter;
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Available : ou=
t Boolean);
> =A0 =A0 =A0procedure Get_Immediate(Item : out Character;
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Available : ou=
t Boolean);
>
> (12) If a character, either control or graphic, is available from the
> specified File or the default input file, then the character is read;
> Available is True and Item contains the value of this character. If a
> character is not available, then Available is False and the value of
> Item is not specified. Mode_Error is propagated if the mode of the
> file is not In_File. End_Error is propagated if at the end of the
> file. The current column, line and page numbers for the file are not
> affected.
>
> Thus the former procedures block if there is no character available,
> the latter ones don't.
>
> Try:
>
> =A0 loop
> =A0 =A0 get_immediate (C);
> =A0 =A0 Put (Integer'Image (Character'Pos (c)));
> =A0 end loop;
>
> Which compiler do you use? If you run the above within GPS, you must
> press <enter> - otherwise GPS obviously does not forward the input to
> the executable (note that GPS echoes the input and you can edit the
> input line with <backspace>). If you run it from a terminal window,
> you can press any key and immediately get the result (for some keys,
> you'll get more than one number) and there is no echo of your input
> and no editing.

Indeed I run the program within GPS, so the enter key have to be
pressed. How can I run the program from a terminal window?