Complete a character array.

Complete a character array.

[Ibon Castilla]

Hi there:

This is my first message to the list. I recently started to programming in
GNU/Linux. I learned C programming with TurboC, and I'm trying to dump all
my knoweledge to Free Software :)

I've started with keyboard input functions, and here is my question: how
can I do to complete an a character array?. Both getchar() and scanf()
need the user to push ENTER. I remember getche() and getch(), but I didn't
found any similar function on any library.

Cheers, Ibon.


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Re: Complete a character array.

[Steve Graegert]

On 1/11/06, Ibon Castilla <estri@euskalnet.net> wrote:
> Hi there:
>
> This is my first message to the list. I recently started to programming in
> GNU/Linux. I learned C programming with TurboC, and I'm trying to dump all
> my knoweledge to Free Software :)
>
> I've started with keyboard input functions, and here is my question: how
> can I do to complete an a character array?. Both getchar() and scanf()
> need the user to push ENTER. I remember getche() and getch(), but I didn't
> found any similar function on any library.

As far as I know, there is no such thing, but you can write one
yourself as suggested in http://c-faq.com/osdep/cbreak.html. 
Unfortunately, the approach described therein is not portable, thus
requiring some effort to ease maintainability across platforms.

	\Steve

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Re: Complete a character array.

[Glynn Clements]

Ibon Castilla wrote:

> I've started with keyboard input functions, and here is my question: how
> can I do to complete an a character array?. Both getchar() and scanf()
> need the user to push ENTER. I remember getche() and getch(), but I didn't
> found any similar function on any library.

If the kernel's terminal driver is in "canonical mode", it doesn't
pass input to the application until you press return. This is so that
it can implement line editing (backspace, Ctrl-W, Ctrl-U).

If you want to read each character as it is typed, you need to disable
canonical mode with tcsetattr().

If you are writing an interactive application, you may want to use the
curses library, which does a lot of the work involved in terminal
handling for you.

-- 
Glynn Clements <glynn@gclements.plus.com>