& operator

[Dave Lukes]

Uh-uh:
	if(*in++ == *in++)

is NOT a sensible way to see if the first two characters of a string are
equal: ask lint, it will say something like: `in: evaluation order undefined'.

Also, for those of little faith, there are actually C compilers that
will take the non-obvious meaning of this (e.g. the PDP-11 cc), and do
the tests then do both increments in one go after the statement,
so BE WARNED,

		Yours in an arbitrary evaluation order
			Dave Lukes
			<United Kingdom>!ukc!hirst1!minotaur!dave