From:	"Stefan Viljoen" <Stefan_Viljoen AT excite DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Making header file - Newbie question
Date:	Thu, 4 Jan 2001 23:30:39 +0200
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References:	<3A53AA94 DOT 911 AT vic DOT ozland DOT net DOT au>
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John Casey <jgcasey AT vic DOT ozland DOT net DOT au> wrote in message
news:3A53AA94 DOT 911 AT vic DOT ozland DOT net DOT au...
> Hi,
>
> I am new to djgpp (<week) although I have dabbled in C and have
> written little assembler programs. My problem is how to save the
> standard functions that I call from main() in a header file so I
> can just inlude them at the beginning without having to scroll
> through them all to get to the latest segment I am working on.
>
> I have scanned as much documentation as I could until my head ached
> but couldn't find anything that actually explained how to do this.
>
> Any pointers in the right direction would be appreciated :)
>
> -- John Casey

Just open a different file in your text edit - put stuff in there like this:

Say you have a function sayhello() that is like this

#include <stdio.h>
#include <conio.h>

void sayhello()
{
  printf("Sayhello!\n");
}

int main(void)
{
 sayhello();
 exit(0);
}

change that to

#include <stdio.h>
#include <conio.h>
#include "sayhello.h"

int main(void)
{
 sayhello();
 exit(0);
}

and create a fille called "sayhello.h":

extern void sayhello();

also create a file called "sayhello.c" containing:

void sayhello()
{
  printf("Sayhello!\n");
}

then link it in at compile time so the compiler can find the code.

Take a look at any of the assembly programs at
http://home.intekom.com/rylan/prog.html for
more detailed and working implementations of how to use very simple .h
files.

Regards,

Stefan Viljoen
F/EMS Dispatcher
Potchefstroom F/EMS
South Africa
http://home.intekom.com/rylan/

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