Private Sub Command1_Click()

  Dim sjzs As Integer

  Dim rjzs As String

  sjzs = Val(Text1.Text)

  rjzs = ""

  Do While Int(sjzs / 2) > 0

    rjzs = Str(sjzs Mod 2) + rjzs

    sjzs = Int(sjzs / 2)

  Loop

  Label1.Caption = rjzs

End Sub

实现该功能的VB程序段如下：

Function space(x As Integer)As String        ‘输出格式化，设置左侧的空格数量

  Dim n As Integer

  For n=9 To x Step-1

     ①  

  Next n

End Function

Private Sub Form_Load()

  Dim t As Long，i As Integer，n As String

  Dim a(1 To 9)As String

  Dim b(1 To 9)As String

  Const num=“987654321”

  For i=1 To 9

    t=t*10+i

    a(i)=space(i)+CStr(t)  ‘CStr函数的功能是将数值转为字符，转换时不会添加空格

       ②   

    n=n+a(i)+“*8+”+CStr(i)+“=”+b(i)+Chr(13)       ‘Chr(13)实现换行处理

  Next i

  Label1．Caption=n

End Sub

For i=1 To 3

k=“”

Fori-1 To 2*i-1

k=k+“*”

Next j

List1.AddItem k

Next i

该程序运行后，在列表框List1中显示的是（  ）

f=[‘A’，‘B’，‘C’]

a=len(f)

print(‘a=’，a)