运算符、基本运算与表达式 知识点题库

Const rs = 2500 '考生总人数（即记录总数）

Dim kh(1 To rs) As String, cj(0 To rs) As Integer

Dim xx(1 To 9) As String '数组xx存放学校名称，如xx(1)="柯中",xx(2)="鲁高"……数组下标代表该学校代码，即"柯中"代码是1,"鲁高"代码是2……

'从数据库中读取考号和成绩数据，存入kh和cj数组，并在list1中显示，代码略。

Private Sub Command1_Click()

  Dim school As String, n As Integer, i As Integer, j As Integer

  Dim t1 As Integer, t2 As String, flag As Boolean

  xx(1) = "柯中": xx(2) = "鲁高": xx(3) = "越崎": xx(4) = "鉴湖"

  xx(5) = "钱清": xx(6) = "豫才": xx(7) = "轻纺城": xx(8) = "鲁中"

For i = 1 To 8

    If xx(i) = Text1.Text Then        ①        

Next i

  n = Val(Text2.Text) : i = 1: flag = True

  Do While flag

    k = i

    For j = i + 1 To rs

      t = Val(Mid(kh(j), 1, 1))

      If t = school Then

        If          ②           Then k = j

      End If

    Next j

    If i > n And cj(k) <> cj(i - 1)  Then flag = False

    If k <> i Then

       t1 = cj(i): cj(i) = cj(k): cj(k) = t1

       t2 = kh(i): kh(i) = kh(k): kh(k) = t2

    End If

    i = i + 1

  Loop

  List2.Clear

  For j = 1 To         ③        

    List2.AddItem kh(j) + " " + Str(cj(j))

  Next j

End Sub

① ② ③ 

Private Sub Command1 _Click( )

Dim s As String, st As Long, ch As Integer

Dim i As Integer, n As Integer

   ①    

n=Len(s)

st=0

For i=1 To n

    ch=   ②  

    st=st+ch*2^(i- 1)

Next i

Text 2. Text = Str(st)

End Sub

① ②