实现上述功能的VB程序如下，但横线处代码有错，请改正。

Private Sub Command1_Click()

    Dim a As String

    Dim x As Integer, s As Integer, k As Integer

    a = Text1.Text

    x = 1: s = 0: k = 0

    For i = 1 To Len(a)

        '如果输入的不是0到9的数字或者空格，则给出错误提示后结束子程序

        If (Asc(Mid(a, i, 1)) < 48 Or Asc(Mid(a, i,1)) > 57)  or(Asc(Mid(a,i,1))= 32)  then’{#blank#}1{#/blank#}Label1.Caption = "只能输入数字或空格"

            Exit Sub

        End If

        If Mid(a, i, 1) = " " Then

            s = s + Mid(a,x,i)’{#blank#}2{#/blank#}

            x = i + 1

            k = k + 1

        End If

    Next i

    Label1.Caption = "这" + Str(k) + "个数的和为:" + Str(s)

End Sub

Dim a (1 To 6) As Integer

Randomize

a(1) = Int (Rnd*2) + 1

For i = 2 To 6

  a(j) = Int (Rnd*i) *2 + 1

  If a(i) < a(i-1) Then

    a(i) = a(i) + a(i-1)

  End If

Next i

执行该程序段后，数组元素a(1)到a(6)的值可能是（  ）

s=input("请输入一串整数，以逗号间隔开来:")

t=""

sum=0

for i in    ①   :

    if i!=", ":

            ②  

    else:

        sum=sum+int(t)

        t=""

print("该数据序列的和为:",sum)