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代 码:
1、自定义函数运用:
Option Compare Database
Dim X As Double '存放临时计算的结果
Dim B As String '存放+-*/
Dim i, j As Integer 'j=0, 为无小数据点
Dim n(9) As Double
Private Function divn()
For i = 0 To 9
n(i) = n(i) / 10 '计算小数点后几位的表示数组
Next
End Function
Private Function jisuan(ByVal a As Integer)
If j = 0 Then
Me.Text0 = Val(Me.Text0) * 10 + a '如果输入的数据没有小数点,则直接把输入的数据加到整数后面
Else
Call divn
Me.Text0 = Val(Me.Text0) + n(a) '如果输入的数据有小数点,则直接把输入的数据加到小数后面
End If
End Function
2、流程控制(select case )运用:
Private Sub Cmd15_Click()
Select Case B
Case "+"
Me.Text0 = X + Val(Me.Text0)
Case "-"
Me.Text0 = X - Val(Me.Text0)
Case "*"
Me.Text0 = X * Val(Me.Text0)
Case "/"
If Val(Me.Text0) = 0 Then
Me.Text0 = "错误:除数不能为0"
Else
Me.Text0 = X / Val(Me.Text0)
End If
End Select
End Sub
3、循环(for ..next)运用:
For i = 0 To 9
n(i) = i
Next
4、函数调用:
Private Sub Cmd2_Click()
Call jisuan(8) '调用计算函数jisuan(),显示输入的数据
End Sub