On Mon, Oct 30, 2006 at 03:59:21PM +0000, Christos Zoulas wrote:
> >
> >I've also deliberatly used:
> >
> >#define x(y)   if (y); else {...}
> >
> >To avoid having to wrap the expansion inside do ... while (0);
> 
> How is one supposed to use this macro?

I remember now, it would be for single statement conditionals. eg:

#define return_nz(r) if (!r); else return (r)

Which is quite happy as:

	return_nz(a);
	if (b)
		return_nz(a);
	if (c)
		...
	else
		return_nz(a);


	David

-- 
David Laight: david@l8s.co.uk