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实现功能：在文本框Text1中输入当天对应的星期，文本框Text2中输入天数，单击“推算”按钮Command1，推算出相应天数后的星期情况，并在标签Label3中输出结果。
控件：三两个Label标签，两个TextBox文本框，一个Command命令按钮
界面：
代码：
Private Sub Command1_Click()
Dim x As String, xq As String, num As Integer, r%
Dim i As Integer, h As Integer
x = "一二三四五六日"
xq = Text1.Text: i = 1
num = Text2.Text
For i = 1 To Len(x)
If xq = Mid(x, i, 1) Then h = i: Exit For
Next i
r = (h num) Mod 7
If r = 0 Then
Label1.Caption = "星期日"
Else
Label1.Caption = "星期 " Mid(x, r, 1)
End If
End Sub
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