#lang scheme
(define (fib n)
(define (fib-iter a b count) (if (= count 0) b (fib-iter (+ a b) a (- count 1))))
(fib-iter 1 0 n))
(fib 10)
#lang scheme
(define (fib n)
(define (fib-iter a b count) (if (= count 0) b (fib-iter (+ a b) a (- count 1))))
(fib-iter 1 0 n))
(fib 10)