Option ExplicitPrivate Sub Command1_Click()Dim A As Single
A = Val(Text1.Text)Select Case A
Case Is > 0, Is < 60
MsgBox ("不及格")Case Is >= 60, Is < 80
MsgBox ("良好")Case Is >= 80, Is <= 100
MsgBox ("优秀")Case Else
MsgBox ("成绩不合法")End Select
End Sub
这段代码错哪儿了,怎么每次输入成绩后点击后都提示不及格......