二级VB上机题库23-在线考试系统

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二级VB上机题库23

1、【简答题】
　

　
Private Sub Command1_Click()
'===考生编写程序开始====

'===考生编写程序结束====

'不要改动以下内容
save Label1
End Sub [10分]

解析：
n = 0
For i = 1 To 60
For j = 1 To 60
For k = 1 To 60
x = k * k
If (x = i * i + j * j) And j > i Then
Print i; j; k
n = n + 1
End If
Next k
Next j
Next i
Label1.Caption = n

2、【简答题】
　

　
Option Base 1
Dim a(4, 4) As Integer
Private Sub Command1_Click()
'====考生编写程序开始====
（1）
'====考生编写程序结束====
'不得修改以下部分
save Label3
End Sub
Private Sub Command2_Click()
'====考生编写程序开始====
（2）
'====考生编写程序结束====
'不得修改以下部分
save Label4
End Sub
Private Sub Form_Load()
Open App.Path & "\in5.txt" For Input As #1
For i = 1 To 4
For j = 1 To 4
Input #1, a(i, j)
Next j
Next i
Close #1
End Sub [10分]

解析：
（1） Max = a(1, 1)
For i = 1 To 4
For j = 1 To 4
If a(i, j) > Max Then
Max = a(i, j)
End If
Next j
Next i
Label3.Caption = Max
（2） Sum = 0
For i = 1 To 4
Sum = Sum + a(i, i)
Next i
Label4.Caption = Sum

3、【简答题】
　

　
Private Sub mnuOper_Click(Index As Integer)
'Select Case ?
Case 1
Form2.Show
Form1.Hide
Case 2
' Timer1.Enabled =?
Case 3
End
End Select
End Sub
Private Sub Timer1_Timer()
Picture1.Left = Picture1.Left + 100
'If Picture1.Left + Picture1.Width >= ? Then
'Picture1.Left = ?
End If
End Sub
Private Sub Command1_Click()
Form1.Show
Form2.Hide
End Sub [10分]

解析：
Select Case Index
Timer1.Enabled = True
If Picture1.Left + Picture1.Width >= Width Then
Picture1.Left = 0

4、【简答题】
　

　 [10分]

解析：
按要求解答即可

5、【简答题】
　

　
Private Sub Command1_Click()
'Combo1.?
Text1.Text = ""
End Sub
Private Sub Text1_KeyPress(KeyAscii As Integer)
'If KeyAscii > 57 Or KeyAscii < ? Then
MsgBox "请输入数字！"
' KeyAscii = ?
End If
End Sub [10分]

解析：
Private Sub Command1_Click()
Combo1.AddItem Text1.Text
Text1.Text = ""
End Sub
Private Sub Text1_KeyPress(KeyAscii As Integer)
If KeyAscii > 57 Or KeyAscii < 48 Then
MsgBox "请输入数字！"
KeyAscii = 0
End If
End Sub

6、【简答题】
　

　 [10分]

解析：
按要求解答即可

7、【简答题】
　

　
Private Sub Check1_Click()
If Check1.Value = 1 Then
Frame1.Enabled = True
Else
Frame1.Enabled = False
End If
End Sub
Private Sub Check2_Click()
If Check2.Value = 1 Then
Frame2.Enabled = True
Else
Frame2.Enabled = False
End If
End Sub
Private Sub Command1_Click()
If Check1.Value = 1 Then
'If ? = True Then
s = "古典音乐"
Else
s = "流行音乐"
End If
End If
If Check2.Value = 1 Then
'If ? = True Then
s = s & "篮球"
Else
s = s & "羽毛球"
End If
End If
'Label2.Caption = ?
End Sub
Private Sub Form_Load()
Check1.Value = 1
Check2.Value = 1
End Sub [10分]

解析：
' If Option1.Item(0) = True Then或If Option1(0).Value = True Then
If Option2.Value = True Then
Label2.Caption = s

8、【简答题】
　

　
Private Sub Command1_Click()
Dim m As Integer
Dim n As Integer
Dim s As Long
Dim i As Integer
m = Val(Text1.Text)
n = Val(Text2.Text)
s = 0
'For i = ? To n
't = ?
's = s + ?
Next
lblResult.Caption = s
End Sub
Private Function f(ByRef x As Integer) As Long
Dim t As Long
t = 1
For i = 1 To x
't = ?
Next
'f = ?
End Function [10分]

解析：
For i = m To n
t = f(i)
s = s + t
t = t * i
f = t

9、【简答题】
　

　 [10分]

解析：
Private Sub Command1_Click()
Shape1.Shape = 3
End Sub
Private Sub Command2_Click()
Shape1.BorderColor = &HFF&
End Sub

10、【简答题】
　

　 [10分]

解析：
Private Sub Dir1_Change()
' File1.Path = Dir1.Path
Form1.File1.Path = Form1.Dir1
End Sub
Private Sub Drive1_Change()
' Dir1.Path = Drive1.Drive
Dir1 = Me.Drive1
End Sub
Private Sub File1_Click()
' Label2.Caption = File1.FileName
Label2 = File1.FileName
End Sub
'Private Sub File1_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
' Label2.Caption = File1.FileName
'End Sub
Private Sub Form_Load()
End Sub

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