Linking files

[timprograms]

I have a .cpp file and a .h file in my .h file I have difinitions...

#ifdef DEFINITION
#define DEFINITION
#define THIS_THING
#endif 

I have probably 20 definitions in my .cpp
I use THIS_THING and my compiler g++ says it doesn't exist...
I have a #include "myheader.h"
What is wrong???

[Smac89]

What are you defining?

[timprograms]

Asci codes
#define BLACK_BG \033[7;30m"
Etc every color for background , text, bold, dark, underline, etc

[Zhuge]

You have an #ifdef there, did you mean #ifndef for include guards?

[timprograms]

Its ifndef not ifdef???

[timprograms]

Thanks I just assumed it was ifdef...

[Zhuge]

#ifdef means "if defined", so if that macro wasn't defined nothing inside will be compiled.

[timprograms]

Yeah I always wondered about that I would read .h files and see
#ifndef
But I thought it said
#ifdef