1#define noargs() 1
2# define onearg(foo) foo
3 # define  twoargs( x , y ) x y
4	#	define	threeargs(	a	,	b	,	c	) a b c
5noargs ( )
6onearg ( 2 )
7twoargs ( 3 , 4 )
8threeargs ( 5 , 6 , 7 )
9