RosettaCodeData/Task/Sleep/Racket/sleep.rkt

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Racket
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2013-04-11 01:07:29 -07:00
#lang racket
(displayln "Enter a time (in seconds): ")
(define time (read))
(when (number? time)
(displayln "Sleeping...")
(sleep time)
(displayln "Awake!"))