1
;creating traffic signal image
(require 2htdp/image)
(define (bulb c)
(circle 10 "solid" c))
(above (bulb "red")
(bulb "yellow")
(bulb "green"))
显示的错误是:。 Module Language: there can only be one expression in the definitions window in: (define (bulb c) (circle 10 "solid" c))
以下球拍代码中的错误是什么?
已禁用交互。 ///我找不出错误
的一部分”图像“被注释掉 – rajdeep04
它适用于我...尝试更改语言 –