Print information in “test mode” but not in “normal execution”

Question

I am using an application in c++ that uses a special dprintf function to print information, this is an example:

dprintf(verbose, \"The value is: %d\", i);
         


        

Answer 1

#ifdef DEBUG
#define dprintf(format, ...) real_dprintf(format, __VA_ARGS__)
#else
#define dprintf
#endif

Here real_dprintf() is the "real" function that is invoked, and dprintf() is just a macro wrapping the call.