Chief Delphi - #define creation

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NASAbound1636

02-02-2006 16:30

#define creation

I am trying to complicate my autonomous file by creating a new variable set to run off of and i need to know how to create a #define code in my .h files so it doesn't spit massive error messages at me for using a "not defined" variable, any instructions on how to properly define something would be nice.

Dave Scheck

02-02-2006 16:55

Re: #define creation

I'm a little confused by your question, but this is how you correctly define a constant in a header and then use it in a C file

my_header.h

Code:

#define MY_CONSTANT 1

my_file.c

Code:

#include "my_header.h"

int x  = MY_CONSTANT;

There's not really much more to it than that.

Alan Anderson

02-02-2006 21:12

Re: #define creation

It sounds like you want to "declare a variable", not "define" anything. Using #define is typically for constants and shortcuts to save typing. What you're probably looking for is something like this:

Code:

  int auto_timer;

  char last_contact;

If you give more information about how you want to use the variable, we can provide more detailed directions on how and where to declare it.

Gamer930

02-02-2006 23:40

Re: #define creation

you can do stuff like

Code:

#define GLOBE_MOTOR pwm03

Couple Tips:
- Normally all constants have capital letters
- Use names to label pwm's like in the example above. I found that is it much easier for a Dummy programmer to understand that the code is right and that it is something mechanical :D

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