试题

试题 试卷

logo

题型:综合题 题类:模拟题 难易度:普通

浙江省名校信息技术仿真训练卷(一)

【加试题】找出100到1 000之间满足以下条件的整数:该数和冥半万数合开后组成的数字串中不存在重复的数字。例如209,其平方数为43 681,209和43 681合并后的数字串“20943681”中无重复数字,209就是符合条件的数。运行界面加图所示,实现上述功能的VB代码如下,但加框处代码有错,请改正。

Private Sub Command1_Click()

  Dim x As Integer,Y As Long,st

As String

  For x=100 To 1 000

    y=x^2

    st=x&y         ‘将数字x和y合并成不含空格的数字串st

    If  Then               ‘①

       List1. AddItem Str(x)&"  "& Str(y)&"  "&st

    EndIf

  Next x

  End Sub

  Function judge(s As String)As Boolean

    Dim a(1 To 100)As String,i As Integer,j As Integer

    judge=False

    For i=1 To Len(s)

      a(i)=Mid(s,i,1)

    Next i

    For i=1 To Len(s)-1

      For j=i+1 To Len(s)

         If  Then Exit Function       ‘②

      Next j

    Next i

    judge=True

  End Function

(1)、①处应改为

(2)、②处应改为

举一反三
编写VB程序,功能为:单击“发牌”按钮“Command1”后,从一副扑克牌(不包括大王、小王、J、Q、K、A)中随机抽取5张牌,牌的花色(♠♥♣♦)忽略,显示在列表框“List1”中。如果这5张牌由一个对子和一个顺子(3张牌连续)组成,则在标签“Label1”中显示“运气不错:)”,否则显示“运气一般:|”。程序运行界面如图所示。

实现上述功能的VB程序如下:

Private Sub Command1_Click()

  List1.Clear

  Dim five(1 To 5) As Integer

  Dim i As Integer, j As Integer, k As Integer

  Dim p As Integer, find_pair As Boolean

  '随机抽取5张牌,将牌的点数存储在数组five中,并在List1中显示。代码略

  i = 5: p = 1: find_pair = False

  Do While i>= 2

    j=p

    Do While j <= i - 1

      If five(j) > five(j + 1) Then

        t = five(j): five(j) = five(j + 1): five(j + 1) = t

      ElseIf five(j) = five(j + 1) And Not find_pair Then

        t = five(1): five(1) = five(j): five(j) = t

        t = five(2): five(2) = five(j + 1): five(j + 1) = t

        find_pair = True

        i = i + 1

        p = _____________

        Exit Do

      End If

      j = j + 1

    Loop 

    i = i - 1

  Loop

  k = 0

  For i = 3 To 4

    If  Then k = k + 1

  Next i

  If five(1) = five(2) And k = 2 Then

    Label1.Caption = "运气不错:)"

  Else

    Label1.Caption = "运气一般:|"

  End If

End Sub

请回答下列问题:

返回首页

试题篮