填空题

按照“先进先出”的原则组织数据的结构的是______。

【参考答案】

队列

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单项选择题

下列程序代码实现生成20个0～100之间的随机整数，存于数组中，打印数组中大于50的数，并求这些数的和。清选择正确的程序段( )，完成程序。 Pnvae Sub Command1_Click() Dim arr(1 To 20) For i=1 To 20 arr(i)______ Text1.Text=Text1.Text & arr(i)& Chr(13)& Chr(10) Next i Sum=0 For Each X______ IfX＞50 Then Print Tab(20);X Sum=Sum+X End If Next X Print Tab(20); Sum= ;Sum End Sub

A．Int(Rnd*99+1) In arr
B．Int(Rnd) In arr
C．Int(Rnd*99+1) In arr()
D．Int(Rnd) In arr()

单项选择题

下列事件过程的功能是：建立一个名为Datal的随机文件，存放角度值及这些角度的正弦函数值和余弦函数值，角度为1，2，3，…，90。请在空白处填入适当的内容，将程序补充完整。 Private Type Ang K As Integer Sinx As Single Cosx As Single End Type Dim Ksc As Ang Private Sub Form_Click() Dim Y As Single Dim i As Integer Dim Ksc As Ang Open______ Y=3.14159 180 For i=1 To 90 Ksc.K=i Ksc.Sinx=Sin(i*Y) Ksc.Cosx=Cos(i*Y) ______ Next i Close #2 End Sub

A．"..\Data1.txt"For Random As #1 Len=10 Put #1,i,Ksc
B．"..\Data1.txt"For Random As #1 Len=10 Put #1,Y,Ksc
C．"..\Data1.txt"For Random As #1 Put #1,i,Ksc
D．"..\Data1.txt"For Random As #1 Put #1,Y,Ksc

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