已知函数 。下面是实现计算该函数的程序,请填空完成以下程序。 Private Sub Command1_Click() Dim k As Integer, i As Integer, s As Long n = 5 : k = 1 For i = 1 To n s = s +______ Next i Print s End Sub Function pow(a As Integer, b As Integer) As Long Dim i As Integer, t As Long t = 1 For i = 1 To a______ Next i pow = t End Function