下面Visual Basic程序段。窗体中有一命令按钮(名称为Command1),结果为______ Option Base 1 Private Sub Command1_Click() a = Array(23, 24, 17, 8, 11, 15, 16, 13) Dim i As Integer Dim num As Integer Dim k As Integer Dim j As Integer Dim flag As Integer num = 0 For i = 1 To 8 flag = 0 k = Int(Sqr(a(i))) For j = 2 To k If a(i) Mod j = 0 Then flag = 1 Next j If flag = 0 Then num = num + a(i) Next i Print num End Sub