What should be added to C, call

[David DiGiacomo]

In article <2600062 at ccvaxa> aglew at ccvaxa.UUCP (Andy "Krazy" Glew) writes:
>Sorry, backslashes don't help macros that I want to have conditional
>sections of code in. Eg. I can't do
>
>#define debugf(parmlist) \
>#ifdef DEBUG \
>	printf parmlist \
>#else \
>	/* nothing */ \
>#endif

There is a simple way to do this if you are willing to define one extra
macro for each condition you want to test within a macro definition.

#define	IFTRUE(a,b) a
#define	IFFALSE(a,b) b

#ifdef DEBUG
#define	IFDEBUG	IFTRUE
#else
#define	IFDEBUG	IFFALSE
#endif

#define	debugf(parmlist) IFDEBUG(printf parmlist, )