下列程序计算Sn的值。Sn=a+aa+aaa+…+aaa…a,其中最后一项为n个。例如:a=5,n=4时,则Sn=5+55+555+5555。请在空白处填人适当的内容,将程序充完整。Private Sub Command1_Click() Dim a As Integer,n As Integer,Cout As Integer Dim Sn As Long,Tn As Long Cout=1 S
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下列程序计算Sn的值。Sn=a+aa+aaa+…+aaa…a,其中最后一项为n个。例如:a=5,n=4时,则Sn=5+55+555+5555。请在空白处填人适当的内容,将程序充完整。Private Sub Command1_Click() Dim a As Integer,n As Integer,Cout As Integer Dim Sn As Long,Tn As Long Cout=1 S