Exercise 4.27: Suppose we type in the following
definitions to the lazy evaluator:


(define count 0)
(define (id x) (set! count (+ count 1)) x)

Give the missing values in the following sequence of interactions, and explain
your answers.242


(define w (id (id 10)))

;;; L-Eval input:
count

;;; L-Eval value:
⟨response⟩

;;; L-Eval input:
w

;;; L-Eval value:
⟨response⟩

;;; L-Eval input:
count

;;; L-Eval value:
⟨response⟩