#lang scheme

(define-struct  item (id desc price) #:transparent)

(define testlist (list

(make-item 1 'burger 1.20)
(make-item 2 'cheeseburger 1.50)
(make-item 3 'bananaburger 8.00)
(make-item 4 'potatoburger 5.00)
(make-item 5 'plumburger 4.00)
(make-item 6 'yoghurtburger 0.10)
(make-item 7 'humanburger 20.00)
(make-item 8 'purpleburger 0.33)
(make-item 9 'treeburger 10.40)
(make-item 10 'burgerburgerrr 2.50)))


(define (lookup id testlist)
    (if (= (item-id (car testlist)) id)
       (car testlist)
        ((lookup (id (cdr testlist))))))