单项选择题

单击命令按钮时,下列程序的运行结果为 Private Sub Command1_Click( ) Print Fun(23, 18) End Sub Public Function Fun(m As Integer, n As Integer) As Integer Do Whilem <> n Do While m > n : m--m - n: Loop Do While m < n : n=n - m: Loop Loop Fun =m End Function

A.0
B.1
C.3
D.5