我正在尝试编写一个函数来计算n中除数的数量,最多为m个除数(其中current是当前除数,count是到目前为止除数的总数)
我得到错误错误:解析错误:在最后一行代码的[绑定](在[expr]中)之后预期的“in”,但我真的不知道“in”可能是最后一行。我在这里做错了什么?
(* Counts the number of divisors*)
let rec count_divisors (n: int) (m: int) (current: int) (count: int): int =
if count > m || current > n then count
else if (n mod current) = 0 then count_divisors n m (current+1) (count+1)
else (count_divisors n m (current+1) count);;
答案 0 :(得分:0)
我想你在另一个函数中使用这个函数(因为它有很多参数,我只期望一个参数 - 你要计算其除数的数字),对吗?
如果有,请尝试将代码更改为以下内容:
let num_divisors n =
let rec count_divisors (n: int) (m: int) (current: int) (count: int): int =
if count > m || current > n then count
else if (n mod current) = 0 then count_divisors n m (current+1) (count+1)
else (count_divisors n m (current+1) count)
in count_divisors n n 1 0;;