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Join Date: Sep 2006

Posts: 327

Reputation: Colin Mac is on a distinguished road

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Colin Mac

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Posting Whiz

Multiple files

Sep 12th, 2007

I have this C program with multiple files and I want to introduce a new file called enemy.c.
and I'm wondering if I'm going about this right.

game.h

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#ifndef GAME_
#define GAME_
 
extern void game (void);
extern void enemyFunc (void);
extern int enemyPosX;  
 
#endif
#ifndef GAME_
#define GAME_

extern void game (void);
extern void enemyFunc (void);
extern int enemyPosX;  

#endif

main.c

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int main (void) 
{
    game();
}
int main (void) 
{
    game();
}

game.c

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#include "game.h"
 
int enemyPosX = 452;
 
void game (void)
{
   enemyFunc();
}
#include "game.h"

int enemyPosX = 452;

void game (void)
{
   enemyFunc();
}

enemy.c

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#include "game.h"
 
void enemyFunc (void)  
{
  enemyPosX -= 4;  
}
#include "game.h"

void enemyFunc (void)  
{
  enemyPosX -= 4;  
}

The program works but I'm wondering if I should make a new file called enemy.h
and put

extern void enemyFunc (void);
in it instead of in game.h, to have a header defining each .c file?

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Join Date: Sep 2004

Posts: 7,868

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Narue

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Re: Multiple files

Sep 12th, 2007

>The program works but I'm wondering if I should make a new file called enemy.h
You can if you'd like. I don't see any benefit for it at this point though.

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Join Date: Sep 2006

Posts: 327

Reputation: Colin Mac is on a distinguished road

Solved Threads: 22

Colin Mac

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Posting Whiz

Re: Multiple files

Sep 12th, 2007

If I were to do it, I would need to include "game.h" in enemy.c as well seeing as I'm using the variable enemyPosX from it?

Last edited by Colin Mac; Sep 12th, 2007 at 5:22 pm.

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Join Date: Sep 2004

Posts: 7,868

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Narue

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Senior Bitch

Re: Multiple files

Sep 12th, 2007

>If I were to do it, I would need to include "game.h" in enemy.c
>as well seeing as I'm using the variable enemyPosX from it?
I would move everything that pertains to enemies into enemy.h. Then you would need to include enemy.h in game.c, which is a smidge more intuitive.

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