For vs while (was Re: Comparing strings...)

[Sean Fagan]

In article <2226 at ukc> tlg at ukc.ac.uk (T.L.Goodwin) writes:
>Almost, but not quite.  If the body of the loop contains a "continue",
>then the second example becomes an infinite loop (other changes to i
>and "break"s notwithstanding), since the increment is never reached.

#define	while(cond)	for(;cond;)

(I'm sitting here trying to think of any case where this will break
[no pun intended 8-)] something; I can't think of any, offhand.)

If you have something such as

	while () {
		whatever;
	}

this will be an infinite loop given the macro, but a syntax error otherwise.
But that's all I can think of...

(I've wondered why C had while, because of this.  The only think I could
think of was that for came after while, and They didn't want to break
existing code...  Any commentators?  [Henry?  Chris?  Doug?  Dennis?])

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