; Fill in the contract for each function provided by these structure and data definitions.
; The first one has been done for you.

;;;;;;;;;;;;;;;;;;;; EXAMPLE ;;;;;;;;;;;;;;;;;;;;

(define-struct book (author title ))
; A Book is (make-book String String)

; Book has one constructor:
; make-book : String String -> Book

; Book has two destructors:
; book-author : Book -> String
; book-title : Book -> String

; Book has one predicate, or huh?-function:
; book? : Any -> Boolean

;;;;;;;;;;;;;;;;;;;; EXERCISES ;;;;;;;;;;;;;;;;;;;;

(define-struct fruit (name color weight))
; A Fruit is (make-fruit String Symbol Number)

; ...


(define-struct motorcycle (name brand color topspeed))
; A Motorcycle is (make-motorcycle String String Symbol Number)

; ...


(define-struct height (value))
; A Height is (make-height Number)

; ...

;;;;;;;;;;;;;;;;;;;; TEMPLATE ;;;;;;;;;;;;;;;;;;;;

; Now choose one of the structures above.
; Write the template for functions which consume that structure.

; Template: