练习3-33
原文
Exercise 3.33. Using primitive multiplier, adder, and constant constraints, define a procedure averager that takes three connectors a, b, and c as inputs and establishes the constraint that the value of c is the average of the values of a and b.
代码
(define (averager a b c)
(let ((sum (make-connector))
(d (make-connector)))
(adder a b sum)
(multiplier sum d c)
(constant (/ 1 2) d)
'ok))
感谢访问,希望对您有所帮助。 欢迎关注或收藏、评论或点赞。
为使本文得到斧正和提问,转载请注明出处:
http://blog.csdn.net/nomasp