VB编程 计算1-1/2!+1/3!-1/4!+.....+(-1)^(n-1)/n! 要求精度达到0.000001
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Private Sub Command1_Click()
Dim i As Integer, j As Integer
Dim n As Integer
Dim a As Double, s As Double
n = Text1.Text
s = 1#
For i = 2 To n
a = 1#
For j = 2 To i
a = a * j
Next
s = s + ((-1) ^ (i - 1)) / a
Next
Print Round(s, 6)
End Sub
Dim i As Integer, j As Integer
Dim n As Integer
Dim a As Double, s As Double
n = Text1.Text
s = 1#
For i = 2 To n
a = 1#
For j = 2 To i
a = a * j
Next
s = s + ((-1) ^ (i - 1)) / a
Next
Print Round(s, 6)
End Sub
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