Home/ Questions/Q 8039265
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-05T03:31:05+00:00

I’m writing code that depends on whether or not a header file is included.

  • 0

I’m writing code that depends on whether or not a header file is included. If the file is included, I want certain added functionality. Is there any way to do this, perhaps with an #if? Using C btw

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Just #define a symbol in that header and use #ifdef later on.

    header.h
#define HAVE_IPV6

some_file.c
#ifdef HAVE_IPV6
/* code */
#endif
    • 0