After writing and testing the code, draw the environment diagram that would resu
ID: 3685628 • Letter: A
Question
After writing and testing the code, draw the environment diagram that would result from evaluating the three statements in the exercise.
Include a drawing in this file, or upload image named.
An accumulator is a procedure that is called repeatedly with a single numeric argument and accumulates its arguments into a sum. Each time it is called, it returns the currently accumulated sum. Write a procedure make-accumulator that generates accumulators, each maintaining an independent sum. The input to make-accumulator should specify the initial value of the sum; for example
(define A (make-accumulator 5))
(A 10)
15
(A 10)
25
Explanation / Answer
(define (make-accumulator initial) (lambda (amount) (set! initial (+ initial amount)) initial))