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Global Definitions

Hello!

What is the best method to declare some variables global ( more than one .C File should know it ) and still avoid multiple public definitions?

A Global Header File is definitely NOT the key to success ;-)

Thanks for your help!

Parents

0 ImPer Westermark over 18 years ago

myinclude.h

#ifndef _MYINCLUDE_H
#define _MYINCLUDE_H

#ifdef MAIN
#define EXTERN
#else
#define EXTERN extern
#endif

EXTERN int my_variable;

#endif _MYINCLUDE_H

main.c



#define MAIN

#include "myinclude.h"

...

other.c

#include "myinclude.h"
...

Reply

0 ImPer Westermark over 18 years ago

myinclude.h

#ifndef _MYINCLUDE_H
#define _MYINCLUDE_H

#ifdef MAIN
#define EXTERN
#else
#define EXTERN extern
#endif

EXTERN int my_variable;

#endif _MYINCLUDE_H

main.c



#define MAIN

#include "myinclude.h"

...

other.c

#include "myinclude.h"
...

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