程序运行时,在文本框Text1中输入n的值,单击命令按钮Command1后,调用函数f计算s=1!
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Private Sub Command1_Click()
Text3.Text = f(Val(Text1.Text))
End Sub
Function f(n As Integer) As Long
Dim i As Integer, j As Integer, l As Long, m As Long
m = 0
For i = 1 To n
l = 1
For j = 1 To i
l = l * j
Next
m = m + l
Next
f = m
End Function
Text3.Text = f(Val(Text1.Text))
End Sub
Function f(n As Integer) As Long
Dim i As Integer, j As Integer, l As Long, m As Long
m = 0
For i = 1 To n
l = 1
For j = 1 To i
l = l * j
Next
m = m + l
Next
f = m
End Function
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