计较机二级测验VB说话法式设想测验题及谜底
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计较机二级VB说话法式设想测验题及谜底
1.在窗体上画一个称号为Text1的文本框,一个称号为Command1的号令按钮,而后编写以下事务进程和通用进程:
Private Sub Command1_Click( )
n = Val(Text1.Text)
If n2 = n/2 Then
f = f1(n)
Else
f = f2(n)
End If
Print f; n
End Sub
Public Function f1(ByRef x)
x=x*x
f1=x+x
End Function
Public Function f2(ByVal x)
x=x*x
f2=x+x+x
End Function
法式运转后,在文本框中输入3,而后单击号令按钮,窗体上显现的是(D)(单)
A.72 36
B.108 36
C.72 6
D.27 3
2.在窗体上画一个称号为Command1的号令按钮,而后编写以下事务进程:
Private Sub Command1_Click( )
c = "1234"
For i = 1 To 4
c1 = Trim(Str( ))
Print c1
Next i
End Sub
法式运转后,单击号令按钮,请求在窗体上显现以下内容
1
12
123
1234
则鄙人划线处应填入的内容为(B)(单)
A.Right(c1,i)
B.Left(c1,i)
C.Mid(c1,i,1)
D.Mid(c1,i,i)
3.在窗体上画一个称号为Command1的号令按钮和一个称号为Text1的文本框,而后编写以下事务进程:
Private Sub Command1_Click( )
n = Val(Text1.Text)
For i = 2 To n
For j = 2 To sqr(i)
If i Mod j = 0 Then Exit For
Next j
If j >Sqr(i) Then Print i
Next i
End Sub
该事务进程的功效是(C)(单)
A.输入n之内的奇数
B.输入n之内的偶数
C.输入n之内的素数
D.输入n之内能被j整除的数
4.在窗体上画一个称号为Command1的号令按钮,而后编写以下通用进程和号令按钮的事务进程:
Private Function f(m As Integer)
If m Mod 2 = 0 Then
f = m
Else
f = 1
End If
End Function
Private Sub Command1_Click( )
Dim i As Integer
s = 0
For i = 1 To 5
s = s + f(i)
Next
Print s
End Sub
法式运转后,单击号令按钮,在窗体上显现的是(C)(单)
A.11
B.10
C.9
D.8
5.在窗体上画一个称号为Text1的文本框和一个称号为Command1的号令按钮,而后编写以下事务进程:
Private Sub Command1_Click( )
Dim array1(10, 10) As Integer
Dim i As Integer, j As Integer
For i = 1 To 3
For j = 2 To 4
array1(i, j) = i + j
Next j
Next i
Text1.Text = array1(2, 3) + array1(3, 4)
End Sub
法式运转后,单击号令按钮,在文本框中显现的值是(D)(单)
A.15
B.14
C.13
D.12
6.Visual Basic利用法式中标准模块文件的扩大名是【BAS或.BAS】(注重不要写点)。
7.在菜单编辑器中成立一个菜单,其主菜单项的称号为mnuEdit,Visible属性为False,法式运转后,若是用鼠标右键单击窗体,则弹出与mnuEdit响应的菜单。
Private Sub Form_ 【mousedown】 (Button As Integer, Shift As Integer, X As Single, Y As Single)
If Button=2 Then
popupmenu mnuEdit
End If
End Sub
8.在菜单编辑器中成立一个菜单,其主菜单项的称号为mnuEdit,Visible属性为False,法式运转后,若是用鼠标右键单击窗体,则弹出与mnuEdit响应的菜单。以下是完成上述功效的法式,请填空。
Private Sub Form mousedown (Button As Integer, Shift As Integer, X As Single, Y As Single)
If Button=2 Then
【popupmenu】 mnuEdit
End If
9.为了使计时器控件Timer1每隔0.5秒触发一次Timer事务,应将Timer1控件的【Interval】属性设置为500。
10.为了使计时器控件Timer1每隔0.5秒触发一次Timer事务,应将Timer1控件的Interval属性设置为【500】。
11.与数学抒发式ln(a+b)/(3x)+5 对应的Visual Basic抒发式是【log(a+b)/(3*x)+5或(log(a+b)/(3*x))+5】
12.将C盘根目次下的图形文件moon.jpg装入图片框Picture1的语句是【】
13.在窗体上画一个称号为Text1的文本框,而后画三个单选按钮,并用这三个单选按钮成立一个控件数组,称号为Option1,法式运转后,若是单击某个单选按钮,则文本框中的字体将按照所选择的单选按钮切换。
Private Sub Option1_Click(Index As Integer)
Select Case 【Index】
Case 0
a = "宋体"
Case 1
a = "黑体"
Case 2
a = "楷体_GB2312"
End Select
text1.fontname=a
End Sub
14.在窗体上画一个称号为Text1的文本框,而后画三个单选按钮,并用这三个单选按钮成立一个控件数组,称号为Option1,法式运转后,若是单击某个单选按钮,则文本框中的字体将按照所选择的单选按钮切换。
Private Sub Option1_Click(Index As Integer)
Select Case index
Case 0
a = "宋体"
Case 1
a = "黑体"
Case 2
a = "楷体_GB2312"
End Select
text1.【fontname】=a
End Sub
15.在窗体上画两个组合框,其称号别离为Combo1、Combo2,而后画两个标签,称号别离为Label1、Label2。法式运转后,若是在某个组合框当选择一个名目,则把所选中的名目在其上面的标签中显现出来。
Private Sub Combo1_Click( )
Call ShowItem(Combo1, Label1)
End Sub
Private Sub Combo2_Click( )
Call ShowItem(Combo2, Label2)
End Sub
Public Sub ShowItem(tmpCombo As ComboBox, tmpLabel As Label)
【tmplabel】.Caption =tmpCombo.Text
End Sub
16.在窗体上画两个组合框,其称号别离为Combo1、Combo2,而后画两个标签,称号别离为Label1、Label2,法式运转后,若是在某个组合框当选择一个名目,则把所选中的名目在其上面的标签中显现出来。
Private Sub Combo1_Click( )
Call ShowItem(Combo1, Label1)
End Sub
Private Sub Combo2_Click( )
Call ShowItem(Combo2, Label2)
End Sub
Public Sub ShowItem(tmpCombo As ComboBox, tmpLabel As Label)
tmpLabel.Caption =【tmpcombo】.Text
End Sub
17.在窗体上画一个称号为Command1的号令按钮,而后编写以下事务进程:
Private Sub Command1_Click( )
n = 5
f = 1
s = 0
For c = 1 To n
f = f*【7】
s = s + f
Next c
Print s
End Sub
该事务进程的功效是计较1!+2!+3!+…+n!的值。
18.在窗体上画一个称号为Command1的号令按钮,而后编写以下法式:
Option Base 1
Private Sub Command1_Click( )
Dim a(10) As Integer
For I = 1 To 10
a(I) = I
Next I
Call【swap】a( )
For I = 1 To 10
Print a(I);
Next
End Sub
Sub swap(b( ) As Integer)
n = ubound(b)
For I = 1 To n / 2
t = b(I)
b(I) = b(n)
b(n) = t
n=n-1
Next I
End Sub
上述法式的功效是,经由进程挪用进程swap,更调数组中数值的寄存地位,即a(1)与a(10)的值交换,a(2)与a(9)的值交换,……,a(5)与a(6)的值交换。
19.在窗体上画一个称号为Command1的号令按钮,而后编写以下法式:
Option Base 1
Private Sub Command1_Click( )
Dim a(10) As Integer
For I = 1 To 10
a(I) = I
Next I
Call swap(a( ))
For I = 1 To 10
Print a(I);
Next
End Sub
Sub swap(b( ) As Integer)
n =【ubound(b)】
For I = 1 To n / 2
t = b(I)
b(I) = b(n)
b(n) = t
n=n-1
Next I
End Sub
上述法式的功效是,经由进程挪用进程swap,更调数组中数值的寄存地位,即a(1)与a(10)的值交换,a(2)与a(9)的值交换,……,a(5)与a(6)的值交换。
20.在窗体上画一个称号为Command1的号令按钮,而后编写以下法式:
Option Base 1
Private Sub Command1_Click( )
Dim a(10) As Integer
For I = 1 To 10
a(I) = I
Next I
Call swap(a( ))
For I = 1 To 10
Print a(I);
Next I
End Sub
Sub swap(b( ) As Integer)
n = ubound(b)
For I = 1 To n / 2
t = b(I)
b(I) = b(n)
b(n) = t
n=【n-1】
Next I
End Sub
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