#lang racket
(require "hw2.rkt")
 (define prg '( (define STYLE "stroke:black") (define (start n) (when (< n 2) (rect 0 (* n 10) 10 20 STYLE) ) (when (> n 0) (start (- n 1)) ) ) )) (display (execute 200 200 prg '(start 10)))