screen clearing in ANSI C

[Leslie Kis-Adam]

Hi everyone!
Does anyone know, if it is possible to clear the screen in ANSI C?
If it is,then how?
Any help would be appreciated.

Laszlo Kis-Adam
<dfighter_AT-NOSPAM_freemail.hu

 

[Ian Collins]

Hi everyone!
Does anyone know, if it is possible to clear the screen in ANSI C?

No, "screens" are platform specific and may not even exist in many.

 

[stasgold]

Hi everyone!
Does anyone know, if it is possible to clear the screen in ANSI C?
If it is,then how?
Any help would be appreciated.

Laszlo Kis-Adam
<dfighter_AT-NOSPAM_freemail.hu

printf(" \033[2J");

should do the work, it's an ansi code for clear screen

 

[Richard Heathfield]

(e-mail address removed) said:

Hi everyone!
Does anyone know, if it is possible to clear the screen in ANSI C?
If it is,then how?
Any help would be appreciated.

Laszlo Kis-Adam
<dfighter_AT-NOSPAM_freemail.hu

printf(" \033[2J");

should do the work, it's an ansi code for clear screen

I wrapped it up in a main and ran it on my Linux box, but the screen didn't
clear. Not even the terminal window cleared.

 

[gurdz]

If I'm not wrong, the simplest method of clearing the screen would be
to use a syntax as shown below
{
..
..
..
system("cls");
..
..
..
}

This syntax is what I have been using over the years, however, you have
to find the proper spot to place this syntax.

kind regards,
Gurdip Singh.
(e-mail address removed) || (e-mail address removed)

 

[Ian Collins]

If I'm not wrong, the simplest method of clearing the screen would be
to use a syntax as shown below
{
system("cls");

Platform (windows?) specific.

 

[Richard Tobin]

If I'm not wrong, the simplest method of clearing the screen would be
to use a syntax as shown below

system("cls");

I tried that, but unfortunately the "cls" command on my system means
"clear local storage", and it reformatted all my disks.

-- Richard

 

[osmium]

Does anyone know, if it is possible to clear the screen in ANSI C?
If it is,then how?

A for loop containing about 60 '\n's would clear most, but not all,
screens.

 

[Clark S. Cox III]

If I'm not wrong, the simplest method of clearing the screen would be
to use a syntax as shown below
{
..
..
..
system("cls");
..
..
..
}

This syntax is what I have been using over the years, however, you have
to find the proper spot to place this syntax.

Hmm, when I run the following program, it outputs:
"sh: line 1: cls: command not found"

#include <stdlib.h>

int main()
{
system("cls");
return 0;
}

 

[CBFalconer]

Does anyone know, if it is possible to clear the screen in ANSI C?
If it is,then how?

Yes, I know. No, it isn't.

 

[CBFalconer]

Does anyone know, if it is possible to clear the screen in ANSI C?
If it is,then how?

printf(" \033[2J");

should do the work, it's an ansi code for clear screen

Doesn't work on my ASR33 teletype.

 

[Gordon Burditt]

Hi everyone!

Does anyone know, if it is possible to clear the screen in ANSI C?
If it is,then how?

Where is the screen on my ASR33 teletype? Or do you mean the metal
screen that keeps flies from getting sucked into the fan on the back of
the CPU unit? For that one, you power down the CPU, remove the screen,
and blast it with a stream of water from a hose to wash the flies off.

 

[Dan Henry]

No, "screens" are platform specific and may not even exist in many.

It simply can't be done in ANSI C. The most portable and reliable
method is to remove power.

 

[gurdz]

system ("cls") works for me....

i will provide you with a simple program that uses it when i get back
on.. right now i gotta head for classes..thats right. classes on
saturday...

kind regards,
Gurdip

 

[Nelu]

system ("cls") works for me....

i will provide you with a simple program that uses it when i get back
on.. right now i gotta head for classes..thats right. classes on
saturday...

You should provide some context when replying. This is not Google
Groups. This is Usenet.

The request was for ANSI C. Wanna bet that that call won't clear
the screen on my Linux machine even though it will probably
compile correctly?

 

[stasgold]

Then your Lunix doesn't support ANSI escape codes

http://en.wikipedia.org/wiki/ANSI_escape_code

(e-mail address removed) said:

Hi everyone!
Does anyone know, if it is possible to clear the screen in ANSI C?
If it is,then how?
Any help would be appreciated.

Laszlo Kis-Adam
<dfighter_AT-NOSPAM_freemail.hu

printf(" \033[2J");

should do the work, it's an ansi code for clear screen

I wrapped it up in a main and ran it on my Linux box, but the screen didn't
clear. Not even the terminal window cleared.

--
Richard Heathfield
"Usenet is a strange place" - dmr 29/7/1999
http://www.cpax.org.uk
email: rjh at the above domain, - www.

 

[Richard Heathfield]

[Top-posting fixed]

(e-mail address removed) said:

(e-mail address removed) said:

Leslie Kis-Adam wrote:
Does anyone know, if it is possible to clear the screen in ANSI C?

printf(" \033[2J");

should do the work, it's an ansi code for clear screen

I wrapped it up in a main and ran it on my Linux box, but the screen
didn't clear. Not even the terminal window cleared.

Then your Lunix
Linux

doesn't support ANSI escape codes

Actually, it does, so that wasn't the problem. There was something *else*
you didn't take into account. But yes, that *might* have been the problem,
mightn't it? So that's at least two problems with your suggested technique,
and I humbly suggest that your suggested technique is therefore not
adequate to the task.

 

[Richard Heathfield]

Ian Collins said:

Platform (windows?) specific.

Works fine in MS-DOS, too (unless you've hacked COMMAND.COM, of course). But
yes.

 

[Richard Heathfield]

osmium said:

A for loop containing about 60 '\n's would clear most, but not all,
screens.

For example, it wouldn't clear anything off a non-scrolling terminal. It
wouldn't clear anything off a teletype. It wouldn't clear anything off a
window other than the current window (on a multi-window system). It
wouldn't clear anything off a screen if stdout is not associated with that
screen (which isn't necessarily under the control of the program). In fact,
there are so many ways this won't work that I'm surprised you bother to
suggest it.

 

[Richard Heathfield]

Dan Henry said:

It simply can't be done in ANSI C. The most portable and reliable
method is to remove power.

Peter Seebach may well have serious objections to that suggestion (since he
claims to be a conforming implementation).