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dim a as integer, sum as double
sum = 0
for a = 2 to 99 step 2
sum = sum + 1.0*a/(a+1)
Next a
'这个时候显示sum就是结果
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Dim i As Long, n As Double
n = 0
For i = 1 To 49
n = n + 2 * i / (2 * i + 1)
Next
MsgBox n
n = 0
For i = 1 To 49
n = n + 2 * i / (2 * i + 1)
Next
MsgBox n
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Private Sub Command1_Click()
Dim i As Integer
Dim n As Double
Cls
For i = 2 To 98
n = n + i / (i + 1)
Next i
Print n
End Sub
Dim i As Integer
Dim n As Double
Cls
For i = 2 To 98
n = n + i / (i + 1)
Next i
Print n
End Sub
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