resource User
	import ArrayQueue
body User()

	cap ArrayQueue  q 
	q = create ArrayQueue(20)
	for [ i = 1 to 10 ] { q.insert(1000+i) }
	for [ i = 1 to 5 ] { write(q.remove()) }
	for [ i = 1 to 3 ] { q.remove() }
	for [ i = 1 to 7 ] { q.insert(2000+i) }
	for [ i = 1 to 9 ] { write(q.remove()) }
	# should give underflow
	q.remove()

end