Dim n As Long, d As Integer, s As String
n = InputBox("請輸入壹正整數") '輸入數字
s = n '轉成字符串型
d = Len(s) '獲取字符串長,即數字有多少位
MsgBox (n & "屬於" & 10 ^ (d - 1) & "到" & 10 ^ d - 1) '輸出