Private Sub Command1_Click()
List1.Clear
List2.Clear
Dim a(1 To 10) As Integer
For i = 1 To 10
a(i) =
If Then
List1.AddItem Str(a(i))
Else
End If
Next i
End Sub
Private Sub Command1_Click ( )
Dim a As Integer
Dim b As Integer
Dim C As Integer
a = Val ( Text1.Text )
b = Val ( Text2.Text )
c= a+b^2
Text3.Text = Str(c)
End Sub
程序运行时,单击命令按钮Command1后弹出如图所示的错误信息提示。出现错误的原因是( )
Private Sub Command1_Click()
Dim n As Long, k As Integer
Dim f1 As Long, f2 As Long, f As Long
=Val(Text1.Text)
If n >= 20 Or n <= 0 Then
Label2.Caption = "输入的数据有误"
Else
If n <= 2 Then ' 第1,2个元素的值都为1
f = 1
Else
f1 = 1
f2 = 1
For k = 3 To n
f = f1 + f2
f1 = f2
f2 = f
Nextk
End If
Label2.Caption = "斐波那契数列第" + Str(n) + "项的值为" +
End If
End Sub
Private Sub Command1_Click()
Dim x As Integer
Dim y As Integer
x = 900
y = Abc(x)
Label1.Caption = Str(y)
End Sub
运行程序,单击命令按钮Command1后弹出如图所示的出错信息提示,引起该错误的语句是( )
For i = 1 To 10
If a(i) >= 0 Then
n=n+1
List1.AddItem Str(a(i))
Else
m=m+1
List2.AddItem Str(a(i))
Next
则该程序段出错的原因是缺少了( )
根据算法将下列程序补充完整。
Private Sub Command1_Click()
Dim S As String,ch As String
Dim ch2 AS String,sum As Double
Dim n As Integer,i As Integer
s=Text1.Text
①
i=1:sum=0
Do While i<=n
ch=Mid(s,i,1)
If ch>=“0”And ch<=“9”Then
j=i
ch2=Mid(s,j,1)
Do While ch2>=“0”And ch2<=“9”
j=j+1
ch2=Mid(s,j,1)
Loop
sum=sum+ ②
i=j
EndIf
i=i+1
Loop
Label3.Caption=Str(sum)
End Sub
实现上述功能的VB程序如下。请在画线处填入适当的语句和代码,把程序补充完整。
Dim w As Integer ‘变量w用于存储每次最大数字字符的位置
Private Sub Command1_Click()
Dim t As String
Dim i As Integer,j As Integer
Dim max As Integer,S As Integer
t=Text1.Text
s=0
For i=3 To 1 Step-1
max=0
For j=1 To Len(t)
If Val(Mid(t,j,1))>max Then
max=Val(Mid(t,j,1))
①
End If
Next j
s=s+ ②
t=delmax(t)
Next i
Text2.Text=Str(s)
End Sub
‘自定义函数功能是去除当前最大数字字符
Function delmax(t As String)As String
delmax= ③
End Function
Private Sub Command1_Click()
Dim r As Integer,k1 As Integer,k2 As Integer
Dim s As String,n As Integer
① ‘从文本框TxtIn中获取字符串
Randomize
r=Int(Rnd()*10)+1 ‘随机生成洗牌次数
n=Len(s)
Do While r>=1 ‘洗牌操作
k1=Int(Rnd()*(n-2))+2
k2=Int(Rnd()*(n-k1+1))+k1
s= ② +Mid(s,1,k1-1)+Mid(s,k2+1,n-k2)
r=r-1
Loop
‘在文本框TxtOut中输出结果
End Sub
① ②
绘制函数图象y=x2的VB源代码如下,请补充完整。
Private Sub Command1_Click() '按钮的单击事件 Dim x, y As Single '定义x,y两个变量 Picture1.Scale (-10, 25)-(10, -25) '定义坐标系 Picture1.Line (-10, 0)-(10, 0), RGB(0, 0, 255) '画横坐标轴,颜色为蓝色 Picture1.Line (0, 25)-(0, -25), RGB(0, 0, 255) '画纵坐标轴,颜色为蓝色 For x = -10 To 10 Step 0.0001 'x值从-10变化到10,每次增量为0.0001 '本行代码计算函数y=x2 Picture1.PSet (x, y), RGB(255, 0, 0) '根据x,y的值用红色描点 Next x '取下一个增量后的x值 End Sub |
以上的VB计算机语言是语言。(已知计算机语言有:机器语言、汇编语言、高级语言)
Private Sub Command1_Click()
Dim s As String, t As String, c As String
Dim i As Integer, p As Integer, p0 As Integer
s =" " : t =" " : p0 = 0
For i = 1 To Len (Text2.Text)
c = ①
If c = "," Then
p = Val(t)
s = s + Mid(Text1.Text, p0 + 1, p – p0) + "/ "
t = ""
②
Else
t = t + c
End If
Next i
Text3. Text = ③
End Sub
① ② ③
s = "123456789"
g = ""
For i = 1 To 3
n = Len(s)
x = Int(Rnd() * n) + 1
g = g + Mid(s, x, 1)
s = Mid(s, 1, x - 1) + Mid(s, x + 1, n - x)
Next i
在程序执行时,若变量 x 的值依次为3,3,6,则最终变量g的值为( )
先将字符转化为二进制的位数据并显示在文本框text2中,数据位数显示在标签Label1中以16个数据为一段,将k个待加密数据依次分割成若干个数据段,剩余数据(个数小于16)为独立数据段。
数据加密规则:
数据个数等于16的数据段,在段内进行位置变换,得到加密数据段。
数据个数小于16的数据段,直接得到加密数据段。
依次合并加密数据段,即为最后的加密数据。
位置变换的规制,方法如下:
具体界面如下图所示:
Private Sub Command1_Click()
Dim a(1 To 1000) As Integer, b(1 To 1000) As Integer
Dim n As Integer, m As Integer
Dim s As String, s1 As String, c As Integer, ch As String
s = Text1.Text: Text2.Text = ""
n = Len(s)
k = 1
For i = 1 To n ‘获取字符的二进制数据存放在数组a()中
n = Asc(Mid(s, i, 1))
Do While n <> 0
a(k) = n Mod 2
n = n \ 2
Text2.Text = Text2.Text + Str(a(k))
k = k + 1
Loop
Next i
①
List1.Clear
For m = 1 To (k - 1) \ 16 '对字符二进制按规则进行位变换,变换后的数据存放在数组b()中并输出
For i = 1 To 4
b(16 * (m - 1) + 4 * (i - 1) + 1) = a((m - 1) * 16 + i)
②
Next i
For i = 1 To 3
b(16 * (m - 1) + 4 * (i - 1) + 3) = a((m - 1) * 16 + 10 + i)
b(16 * (m - 1) + 4 * (i - 1) + 2) = a((m - 1) * 16 + 17 - i)
Next i
For i = 1 To 2
b(16 * (m - 1) + 13 + i) = a((m - 1) * 16 + 4 + i)
Next i
For i = 1 To 4
s1 = ""
For j = 1 To 4
s1 = s1 + Str(b(16 * (m - 1) + (i - 1) * 4 + j))
Next j
List1.AddItem s1
Next i
List1.AddItem ""
Next m
s1 = ""
For i = ((k - 1) \ 16) * 16 + 1 To k - 1
b(i) = a(i)
If ③ Then
s1 = s1 + Str(a(i))
List1.AddItem s1
s1 = ""
Else
s1 = s1 + Str(a(i))
End If
Next i
List1.AddItem s1
Text3.Text = ""
For i = 1 To k - 1
Text3.Text = Text3.Text + Str(b(i))
Next i
End Sub
实现上述功能,请在划线处填入适当的代码:
程序中①处填入的是。
程序中②处填入的是。
程序中③处填入的是。
Private Sub Command1 Click()
Dim a(1 To 10)As Integer
Dim i As Integer
For i=1 To 10
a(i)=i * i
Next i
List1.Add Item Str(a(i))
End Sub
运行程序,单击命令按钮Command1后,出现的错误提示为:( )
Dim a(1 To 5) As Integer, i As Integer, c As Integer
a(1) = 2: a(2) = 1: a(3) = 3: a(4) = 4: a(5) = 5
c = 0
For i = 1 To 4
If a(i) <= a(i+1) Then c = c + 1
Next i
Print c
该程序的运行结果是。
n = 0
x = 1
while x < 20:
x = x*3
n = n+1
print(x,n)
屏幕显示结果是( )。
a=32
b=14
c=a//b
print(c)
a=4
b=5
c=a+b
print(c)
print(“c”)
场景名:main 序号类别:2 |
进入方式:由“load”场景单击“Erter”按钮进入 |
呈现方式: ①标题在舞台左上角出现,第1秒从完全透明到完全显示的效果,最后1秒从完全显示到完全透明的效果。 ②“女孩”从舞台的左侧驶向右侧。 ③“退出”按钮位于舞台右下方,单击该按钮,播放下一场景动画,并停止声音的播放 ④其他动画略。 |
吴观顺序说明: ①开始出现背景、女孩、标题和声音; ②最后停止动画播放,并出现“退出”按钮“女孩”依然在骑行运动,声音继续播放。 |
使用Flash软件编辑界面如图a所示:
图a
“女孩”图层关键帧中的对象是由“女孩”元件生成的实例,则该图层第1帧到第60帧的补间类型是(单选,填字母:A .动画补间动画 / B .形状补间动画 / C . 逐帧动画)。“声音”图层的声音同步属性设置为(选填:事件 / 数据流)。
图b