RosettaCodeData/Task/Fibonacci-sequence/Scheme/fibonacci-sequence-3.scm

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Scheme
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2023-07-01 11:58:00 -04:00
(define (fib n)
(let loop ((a 0) (b 1) (n n))
(if (= n 0) a
(loop b (+ a b) (- n 1)))))