if and cond

(define units 12)
(print (if (>= units 10) "busy" "quiet"))

(define city "Mombasa")
(print
 (cond
  ((string=? city "Nairobi") "capital")
  ((string=? city "Mombasa") "coast")
  (else "other")))

(print (if #f "yes" "no"))

(define n 0)
(print (if (zero? n) "empty till" "open"))