Private   Sub  Command1_click ( )

Dim  n  As  Integer , m  As  Integer  , k  As  Integer

n  = Len ( Text1．Text )

m  = Val ( Text2．Text )

k  = Val ( Text3．Text )

If  m + k -1 > n   Then

Text4．Text = Mid ( Text1．Text , 1 , m – 1 )

      Else

       Text4．Text = Mid ( Text1．Text , 1 , m–1 ) + Mid ( Text1．Text , m+k , n–m–k +1 )

      End  If

End  Sub

    s = Text1.Text: sum = 0: t = 0: cnt = 1

    For i = 1 To Len(s)

      c = Mid(s, i, 1)

      If c >= "0" And c <= "9" Then

        j=j+1

      Else

        If cnt Mod 2 = 1 Then sum = sum + val(mid(s,i-j,j))

        j= 0：cnt = cnt + 1

      End If

    Next i

在文本框text1输入“12d6a3c4f20”，程序运行后sum的值是（  ）

a(I)=68: a(2)=88: a(3)=76: a(4)= 60: a(5)=98: a(6)=100: a(7)= 64: a(8)=85: a(9)=99: a(10)=59

  For i=1 To 9

    b(i)=Abs(a(i+1)-a(i))

    c(b(i)\10)= c(b(i)\10) + 1

  Next i

  For i=0 To 10

    If c(i)> 0 Then Label1.Caption = Label1.Caption + "" + Str(c(i))

Next i

数组c各元素初值为0，执行该程序段，标签Label 1上显示的内容是（  ）