library function question

From: Paul Fedorenko (pfedorenko_at_look.ca)
Date: 05/29/04 

Date: Fri, 28 May 2004 22:23:46 -0400

I've just started taking a C programming class. The instructor claims
to be teaching us standard ANSI C, which should be compatible with all
compilers. Thing is, he's been teaching the class to use a particular
function, which is supposed to be a part of stdio.h, and he'll be
teaching more uses for it in the future. The function in question is:

        system("clear");

which apparently symply clears the screen (standard 80 column x 25
line UNIX console) at the moment.

Now... I'm not sure if compiler specific questions here, but since
I'm not sure where to post this, I'm hoping all will be well in the
end.

My problem is that none of the compilers I've tried it with seem to
include that function. I've tried Open Watcon and gcc under Windows
and gcc under Linux, to no avail. At the school, we're using a
compiler called xlc under IBM's AIX operating system.

So... does anyone know where I might be able to find a protype (or
find out how to write one myself) that I could add to my compilers at
home so that I can actually get my assignments done without having to
rely on using the campus labs all the time? Preferably someone who's
used xlc, I guess.

Any pointers would be greatly appreciated.

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