RosettaCodeData/Task/Fibonacci-sequence/Common-Lisp/fibonacci-sequence-7.lisp

14 lines
367 B
Common Lisp

;; Project : Fibonacci sequence
(defun fibonacci (nr)
(cond ((= nr 0) 1)
((= nr 1) 1)
(t (+ (fibonacci (- nr 1))
(fibonacci (- nr 2))))))
(format t "~a" "First 10 Fibonacci numbers")
(dotimes (n 10)
(if (< n 1) (terpri))
(if (< n 9) (format t "~a" " "))
(write(+ n 1)) (format t "~a" ": ")
(write (fibonacci n)) (terpri))