VB中编写一个成绩判定小程序,但是运行出错,求高人指点.
以下是程序语句,运行后,99分也被判定为E.请高人指点,谢谢.PrivateSubCommand1_Click()DimaAsIntegera=Val(Text1.Tex...
以下是程序语句,运行后,99分也被判定为E.请高人指点,谢谢.
Private Sub Command1_Click()
Dim a As Integer
a = Val(Text1.Text)
Select Case a
Case a >= 90
Text2.Text = "A"
Case a >= 80
Text2.Text = "B"
Case a >= 70
Text2.Text = "C"
Case a >= 60
Text2.Text = "D"
Case Else
Text2.Text = "E"
End Select
End Sub 展开
Private Sub Command1_Click()
Dim a As Integer
a = Val(Text1.Text)
Select Case a
Case a >= 90
Text2.Text = "A"
Case a >= 80
Text2.Text = "B"
Case a >= 70
Text2.Text = "C"
Case a >= 60
Text2.Text = "D"
Case Else
Text2.Text = "E"
End Select
End Sub 展开
1个回答
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主要是判断条件写的有问题。下面这样写就好了...
Case a >= 90
Text2.Text = "A"
Case a >= 80 and a<90
Text2.Text = "B"
Case a >= 70 and a<80
Text2.Text = "C"
Case a >= 60 and a<70
Text2.Text = "D"
Case Else
Text2.Text = "E"
Case a >= 90
Text2.Text = "A"
Case a >= 80 and a<90
Text2.Text = "B"
Case a >= 70 and a<80
Text2.Text = "C"
Case a >= 60 and a<70
Text2.Text = "D"
Case Else
Text2.Text = "E"
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谢谢,但是还是不行
追答
这里主要是 case 语句的条件有错误，不能写成 case a>=90,要写成 case Is >=90...
后面的判断条件都应改正确....
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