On Thu, 9 Feb 2017, Michael Kjörling wrote:

> I didn't know that // was now accepted to begin a comment in C, but I 
> strongly suspect that any compiler modern enough to know about that will 
> know just as well about #if 0.

// isn't in ANSI C, but I've been using it for years on quite a few 
platforms (I see that even M$ supports it); I don't know where I first saw 
it.

-- 
Dave Horsfall DTM (VK2KFU)  "Those who don't understand security will suffer."