Question

For debugging purposes I would like to have a printf_debug function that would function just like the standard printf function, but would only print if a #DEFINE DEBUG was true

I know I have to use varagrs (…) but I have no idea how to actually achieve that.

Thanks in advance.

Answer 1

Easier to just #define it away. Something like this:

#ifdef DEBUG
#define printf_debug printf
#else
#define printf_debug while(0)printf
#endif