河南大学 Visual Basic程序设计 课后答案
Visual Basic程序设计课后习题答案
习题 11. 填空题(1) Visual Basic 是一种面向 的可视化程序设计语言，采取了 的编程机制。
(2) Visual Basic 的对象主要分为 和 两大类。
(3) 在 Visual Basic 中，用来描述一个对象外部特征的量称之为对象的 。
(4) 在 Visual Basic 中，设置或修改一个对象的属性的方法有两种，它们分别是： 和 。
(5) 在 Visual Basic 中，每个对象一般都能感知和接收多个不同的事件，并能对这些事件作出响应，其响应方式就是通过调用执行一个与之相对应的 来实现的。
(6) 在 Visual Basic 中，事件过程的名字由 、 和 所构成。
(7) 若用户单击了窗体 Form1，则此时将被执行的事件过程的名字应为：。
(8) Visual Basic 的集成开发环境主要由6个部分组成，它们分别是： 、 、 、 、 、 。
2.简答题(1) 简述Visual Basic 的特点(2) 什么是对象的属性、事件和方法？(3) Visual Basic 如何完成对用户操作的响应?(4) 什么是事件? 事件过程的一般格式是怎样的？如何编写对象的事件过程?习题 22.1 说明下列哪些是Visual Basic 合法的直接常量，并分别指出它们的类型。
100.0 %100 1E1 123D3 123,456 0100“ASDF” “1234.5” #2004/10/7# 100# π&O78 &H123 True T -1123! 345.54#2.2 下列数据哪些是变量，哪些是常量？是什么类型的常量？Name “name” False ff “11/16/99” cj“120” n #11/12/2004# 12.3452.3 下列符号中，哪些可以是Visual Basic 的合法变量名？A123 a12_3 123_a a,123 a 123 IntegerXYZ False Sin(x) 变量名 sinx π2.4 把下列数学表达式写成Visual Basic 表达式：（1）5||z y x ++ （2）6)1(xy +（3）xy y x 310+ （4）a acb b 242-+-（5）3211111r r r ++ （6）110ln 45sin 10++++y x e2.5 写出下列表达式的值：（1）123 + 23 Mod 10 \ 7 + Asc("A")（2）Int(68.555 * 100 + 0.5) / 100（3）#11/22/2004# - 10（4）"ZXY" & 123 & "abc"2.6 设a=7，b=3，c=4，求下列表达式的值：（1）a + 3 * c （2）a ^ 2 / 4（3）a / 2 + 3 \ 2 （4）a Mod 3 + b ^ 3 / c \ 52.7 写出下列函数的值：（1）Int(-3.14159) （2）Fix(-3.14159)（3）Sqr(Sqr(81)) （4）Len("Visual Basic 程序设计")（5）Int(Abs(99 - 100) / 2) （6）Sgn(7 * 3 + 2)（7）LCase("Hellow VB!") （8）Mid("Hellow VB!", 4, 3)（9）Left("Hellow VB!", 3) （10）Val("16个加23个")（11）Str(-459.55) （12）UCase("Visual Basic")2.8 选择题（1）可以同时删除字符串前导和尾部空格的函数是 。
visual basic程序设计课后编程答案
Dim n As Integern=Text1.TextIF(n Mod 4 =0 And n mod 100< >0 or n mod 400 = 0)Then Text2.text =”闰年”ElseText2.text=”非闰年”End IF求和求积Dim i As integerOpen App.path&”\jsdata.txt”For input As #1For i =1 to 15Input #1,arr(i)Next iIf op1.value=ture thenT1.text=Aaa()End ifIf op2.value=ture thenT1.text=Bbb()End ifClose #1写入文件****Dim i As Integer, j As Integer, n As IntegerOpen app.path &”\zfwj.txt”for output As #1n=val(text1.text)for I =1 to nfor j=1 to iprint #1,”*”;next jprint #1next I close#1计算结果dim n As Integer, I As Integer, s1 As integer,s2 As long n=val(text1.textfor I =1 to ns1=s1+is2=s2+s1next itext2.text=s2求值dim n1 as integer, n2 as integer, n3 as integer,t as integer n1= val(text1.text)n2=val(text2.text)n3=val(text3.text)if n1<n2 then t=n1:n1=n2:n2=tif n2<n3 then t=n2:2=n3:3=tif n1<n2 then t =n1:1=n2:2=ttext4.text=n1text5.text=n3建立文件显示文件Dim num as string,name as srting, I as integerOpen App.path&”\xhxm.txt”for output As #1For I = 1 to 3num=inputbox(“请输入学号：“)name = inputbox(“请输入姓名：“)write #1,num,namenext iclose #1End sub Private sub command2_click()Dim s as string, I as integerOpen app.path &\xhxm.txt” for input as # 1Do While Not EoF(1)Line input # 1,sText1.text= text1.text& s & vbCrLfLoopClose #1第三卷求和输入N值Dim n As integer, I as integer, sum as integerN= val(text1.text)For I = 1 to nIf I mod 3 =0 then sum = sum+ iNext iText2.text=sum输入正整数NDim m As integer, n as integerPrivate sub commad1_click(0Dim c as doubleN=text1.textM=text2.textIf n<=m thenC=fact(m)/(fact(n)* fact(m-n))Text3.text=cElseMsgbox”输入的n必须小于等于m！请重新输入“Text1.text=””Text2.text=””Text1.setfocusEnd ifEnd sub读入数据统计英文字母Dim s as stringOpen app.path&”\yy.txt”for input as #1Do while not EOF(1)Line input #1,sText1.text=text1.text &s &vbCrLfLoopClose #1End subPrivate sub command2_click()Dim n as integer, I as integer, s As integer, c as stringN= Len(text1.text)For I = 1 to nC= mid(text1.text,I,1)If c >=”a”and c <=”z” or c 》=“a” and c <=”z” then s =s+1 Next iLabel1.caption= “共“& s &”个英文字母”End sub第四卷转换十进制Dim n as integer,b as stringN=text1.textB=zh(n)Text2.text=b读取文件加密Dim s1 as stringPrivate sub command1_click()Open app.path &”\jmwb.txt”for input as #1Input #1,s1Text1.text=s1End subPrivate sub command2_click()Dim n As integer, I as integer dim s2 as string, j As stringN=Len(s1)For I =1 to nJ=mid(s1,I,1)J=chr(asc(j)+5)S2=s2&jNext iText2.text=s2生成数组降序排列Option base 1Dim n AS integer,x(15) as integerPrivate Sub command1_Click(0Dim s1 as stringFor N= 1 to 15X(N)=int(91 * Rnd +10)S1=s1 &STR(x(N))Next NText1.text =s1End subPrivate sub command2_click()Dim s2 as stringDim I as integer, j AS integer t as integerFor I =1 to 15For j 1 to 15For j=I +1 to 15If x (i)<x(j) thenT=x(i)X(i)=x(j)X(j)=tEnd ifNext jS2=s2& Str(x(i))Next IText2.text =s2End sub第五卷判断字符还是字母Dim s as stringCall Getchar(s)Text1.text=sIf Asc(s)>= Asc(“A”) and asc (s)<=asc(“z”) or asc (s)>=Asc(“a”) And asc (s)<=asc(“z”) then Label1.caption=”是字母字符“ElseIf asc(s)>=asc(”0”) and asc(s)<= asc(“s)<=asc(“9”) thenLabel1.caption=”是数字字符“ElseLabel1.caption=”是其他字符”End ifEnd sub生成三个随机数Dim n1 as integer, n2 as integern1=val(text1.text)n2=val(text2.text)label1.caption=int((n2-n1+1)*Rnd +n1)label2.caption=int((n2-n1+1)*Rnd+n1)label3.caption=int((n2-n1+1)*Rnd+n1)end sub转换大写小写Dim a as stringPrivate sub command1_click()Text1.text=UCase(a)End subPrivate sub command1_click()Text1.text=LCase(a)End subPrivate sub command3_click()Text1.text=aEnd subPrivate sub text1_keypress(keyascii as integer)If not((keyascii>=65 and keyascii<=90)or (keyascii>= 97 And keyascii<=122)) then BeepKeyascii =0End Ifa=Text1.textend sub。
visual basic 程序设计课后习题参考答案
［Exit Function］ End Function
(4). Function 过程的调用方法： ①直接调用 像使用 VB 内部函数一样，只需写出函数名
和相应的参数即可 ②用 Call 语句调用 与调用 Sub 过程一样来调用 Function
过程，当用这种方法调用 Function 过程时，将会放弃返回值 3、简述 VB 过程中参数传递的两种方式。
第五章 数 组
4
一、选择题
1 2 3 4 5 6 7 8 9 10 DADEBBCCC A
二、填空题
1 2、12、1、3、-1、2 0123 2222
2 2101 4444
3 name、index 4 preserve、erase 5 ubound、lbound
第六章 过 程
一、选择题
1 2 3 4 5 6 7 8 9 10 DCDCBABAB D 11 12 13 14 15 16 17 18 19 20 ACCDABCDB C
二、填空题
1 bas 2 形式、实际 3 a()、Ubound(b)、n=n-1 4 30、70 5 fedcba、static
三、简答题
6 static 7 static 8 12、7 9 visual basic 程序设计 10 -100
1、简述事件过程和通用过程的含义和联系。
5
VB 应用程序是由过程组成的，过程是完成某种特殊功能的一 组独立的程序代码。VB 中的过程有两大类：事件过程和通用过程
Visual basic 程序设计习题参考答案
第一章 Visual basic 程序设计
一、选择题
1 2 3 4 5 6 7 8 9 10
DC
CDCBAC B
VisualBasic程序设计教程第版课后部分编程题参考答案(一)
VisualBasic程序设计教程第版课后部分编程题参考答案(一)Visual Basic 程序设计教程是程序员必备的一本教材。
而其第四版中也包含了大量课后编程题，能够帮助读者深入理解 Visual Basic 程序设计的核心内容。
本文就来为大家介绍一下这部分编程题的参考答案。
一、数据类型和运算符1. 将两个整数相加Dim num1, num2, result As Integernum1 = 10num2 = 20result = num1 + num2MsgBox ("The result of adding " & num1 & " and " & num2 & " is " & result & ".")2. 将两个小数相减Dim num1, num2, result As Doublenum1 = 2.5num2 = 1.2result = num1 - num2MsgBox ("The result of subtracting " & num2 & " from " & num1 & " is " & result & ".")3. 将两个字符拼接在一起Dim str1, str2, result As Stringstr1 = "Hello"str2 = "World"result = Str1 + Str2MsgBox ("The result of concatenating " & str1 & " and " & str2 & " is " & result & ".")二、程序结构和函数1. 将两个整数相加并返回结果Public Function Add(ByVal num1 As Integer, ByVal num2 As Integer) As IntegerDim result As Integerresult = num1 + num2Return resultEnd Function2. 获取当前日期和时间Dim currentDateTime As StringcurrentDateTime = Now()MsgBox ("The current date and time is " & currentDateTime & ".")3. 显示一个消息框并返回用户的选择Dim userInput As IntegeruserInput = MsgBox("This is a prompt. Would you like tocontinue?", vbYesNoCancel, "Message Box Test")MsgBox ("Your choice was " & userInput & ".")三、数组和结构1. 将一个整数数组按照升序排列Dim numArray() As IntegernumArray = {5, 10, 2, 8, 1}Array.Sort(numArray)MsgBox ("The sorted array is " & Join(numArray, ", ") & ".")2. 创建一个结构体表示一个人，包含姓名、年龄和性别字段Public Structure PersonPublic Name As StringPublic Age As IntegerPublic Gender As StringEnd Structure3. 创建一个数组表示一个班级的学生，使用 Person 结构体表示每个学生的信息Dim students(2) As Personstudents(0).Name = "Tom"students(0).Age = 16students(0).Gender = "Male"students(1).Name = "Jane"students(1).Age = 15students(1).Gender = "Female"students(2).Name = "Bob"students(2).Age = 17students(2).Gender = "Male"四、文件和数据库1. 读取一个文本文件中的内容并显示Dim filePath As String ="C:\Users\UserName\Documents\MyFile.txt"Dim fileText As StringfileText = File.ReadAllText(filePath)MsgBox ("The contents of the file are " & fileText & ".")2. 将一个字符串写入到一个新建的文本文件中Dim filePath As String ="C:\Users\UserName\Documents\NewFile.txt"Dim fileContent As StringfileContent = "This is the content of the new file."File.WriteAllText(filePath, fileContent)MsgBox ("The file was created and the following content was written to it: " & fileContent & ".")3. 从一个 SQL 数据库中查询某个表格的内容Dim connectionString As String = "DataSource=myServerName;Initial Catalog=myDataBase;UserId=myUsername;Password=myPassword;"Dim query As String = "SELECT * FROM myTable"Dim dataTable As New DataTable()Using connection As New SqlConnection(connectionString)connection.Open()Using command As New SqlCommand(query, connection)Using adapter As New SqlDataAdapter(command)adapter.Fill(dataTable)End UsingEnd UsingEnd UsingMsgBox ("The following records were retrieved from the database: " & vbNewLine & DataTableToString(dataTable))这些编程题的参考答案可以帮助读者理解 Visual Basic 程序设计的一些基本概念和技术，希望读者能够结合自己的实际情况进行学习和练习，不断提高自己的编程水平。
Visual Basic程序设计作业参考答案
窗体
作业2
一、选择题:
1
2
3
4
5
6
7
8
9
10
11
12
C
B
D
A
B
D
A
A
D
A
二、填空题:
题号
参考答案
1
对象列表框，属性显示排列方式，属性列表框，属性说明框
2
Text1.text=”Hello”
3
标准控件ActiveX控件
4
Top Left Width Height
5
Shift
6
Shift＋ctrl
7
《Visual Basic程序设计》作业参考答案
作业1
一、选择题:
1
2
3
4
5
6
7
8
9
10
11
12
B
C
D
A
C
B
A
D
C
B
二、填空题:
题号
参考答案
1
学习版专业版企业版
2
通过“开始菜单”中的“程序”命令
通过“开始”菜单中的“运行”命令
3
文件 退出
4
ALT＋Q
5
13
6
7
8
.vbp,.frm
9
标准菜单 功能菜单
3
Path。
三、实训：（略）
作业12
一、选择题：
1
2
C
D
二、实训：（略）
作业13、作业14、作业15、作业16（略）
5
运行（执行）
6
1
作业5答案
VisualBasic程序设计基础课后习题参考答案
资料内容仅供您学习参考，如有不当或者侵权，请联系改正或者删除。
第1章 Visual Basic 6.0程序设计概述一、判断题1．√ 2．√3．×说明: 同类控件( 如两个标签) 相互重叠, 设计时能够设置”置前”、”置后”属性。
4．√ 5．× 6．√ 7．× 8．√ 9．√ 10．×11．√ 12．√13．× 14．√ 15．× 16．√ 17．√ 18．√ 19．√20．√二、选择题1. C2. B 3．D 4．C 5．B 6．A 7．D 8．A 9．B 10．A 11．C 12．D三、填空题1．对象、事件 2．属性、方法、事件 3．控件、屏幕( Screen)4．对象 5．Left、 Top 6．属性、 <对象名>.<属性名>=<表示式>7．网格 8．F orm19．Load或Initialize或Resize或Activate( 自动执行的先后顺序也按此排列)10．Activate、 Deactivate四、程序设计题程序1．界面设计参看图10-1、 10-2以及表10-1。
表10-1 实例2各控件的主要属性设置过程设计如下:Private sub Form_Click()Command2.Enabled = FalseEen SubPrivate Sub Command1_Click()Label2.Visible = FalseLabel1.Caption = Text1.Text + ": 欢迎使用" +资料内容仅供您学习参考，如有不当或者侵权，请联系改正或者删除。
Label1.CaptionText1.Visible = FalseCommand1.Enabled = False: Command2.Enabled = True End SubPrivate Sub Command2_Click()EndEnd Sub程序2．界面设计略, 过程设计如下:Private Sub Command1_Click() '字体变大 Form1.FontSize = Form1.FontSize + 3Form1.Cls: Print "欢迎使用VB"End SubPrivate Sub Command2_Click() '字体变小 Form1.FontSize = Form1.FontSize - 3Form1.Cls: Print "欢迎使用VB"End SubPrivate Sub Command3_Click() '字体加粗 Form1.FontBold = TrueForm1.Cls: Print "欢迎使用VB"End SubPrivate Sub Command4_Click() '字体不加粗 Form1.FontBold = FalseForm1.Cls: Print "欢迎使用VB"End Sub运行时, 不得连续、过多次单击”字体变小”按钮, 因为当FontSize属性值小于0会产生适时错误。
visual_Basic程序设计教程_课后习题答案及练习
"VB程序设计"综合复习资料第一章 Visual Basic程序设计概述一、填空题1、VisualBasic是一种面向__________的可视化程序设计语言，采取了__________的编程机制。
2、在VB中工程文件的扩展名是____________，窗体文件的扩展名是____________，标准模块文件的扩展名是____________。
3、执行“工程〞菜单下的__________命令，可选择并添加Active*控件。
4、Visual Basic 6.0用于开发__________环境下的应用程序。
二、选择题1、下面不是VB工作模式的是〔〕A．设计模式B．运行模式C．汇编模式D．中断模式2、可视化编程的最大优点是〔〕A．具有标准工具箱B．一个工程文件由假设干个窗体文件组成C．不需要编写大量代码来描述图形对象D．所见即所得3、以下不能翻开属性窗口的操作是〔〕A．执行“视图〞菜单中的“属性窗口〞命令B．按F4键C．按Ctrl+TD．单击工具栏上的“属性窗口〞按钮4、以下可以翻开立即窗口的操作是〔〕A．Ctrl+D B．Ctrl+E C．Ctrl+F D．Ctrl+G5、Visual Basic的编程机制是〔〕A．可视化 B．面向对象 C．面向图形 D．事件驱动三、简答题1、代码窗口主要包括哪几局部？2、在工程资源管理器窗口中，主要列出了哪三类文件？3、窗体布局窗口的主要用途是什么？4、VB的根本特点是什么？5、怎样理解可视化设计？6、怎要理解事件驱动编程？第二章简单的VB程序设计一、填空题1、设置是否可以用Tab键来选取命令按钮，应该用______________属性。
2、一个控件在窗体的位置由_______和________属性决定，其大小由__________和_________属性决定。
3、利用对象的属性setfocus可获得焦点，对于一个对象，只有其visible属性和____________属性为true，才能承受焦点。
VisualBasic程序设计课后题答案
Vb课后题答案参考答案第1章概述第3章常用标准控件二．选择题：1.C2. B3.C.4.D5.B6.B7.A8.C9.B 10.C11.C 12.A 13.C 14.B 15.D16.D 17.C 18.A 19.D 20.A 21.B三．编程及上机调试：1.Private Sub Check1_Click()If Check1.Value = 1 ThenText1.FontBold = TrueElseText1.FontBold = FalseEnd IfEnd SubPrivate Sub Check2_Click()If Check2.Value = 1 ThenText1.FontItalic = TrueElseText1.FontItalic = FalseEnd IfEnd SubPrivate Sub Check3_Click()If Check1.Value = 1 ThenText1.FontUnderline = TrueElseText1.FontUnderline = FalseEnd IfEnd SubPrivate Sub Command1_Click()Text1.Text = " "End Sub2.Private Sub Command1_Click()Text2.Text = List1.ListCountPrivate Sub Command2_Click()List1.AddItem Text1.TextText1.Text = " "End SubPrivate Sub Command3_Click()Dim i As Integeri = List1.ListIndexList1.RemoveItem iCommand3.Enabled = FalseText1.SetFocusText2.Text = List1.ListCountEnd SubPrivate Sub Form_Load()Command3.Enabled = FalseEnd SubPrivate Sub List1_Click()Command3.Enabled = TrueEnd Sub第4章VB语言基础二．选择题：1.A2. D3.D.4.A5.A6.A7.C8.D9.C 10.B11.A 12.D 13.C 14.A 15.A16.C 17.D 18.A 19.B 20.D21.C 22.A 23.B 24.C 25.C三．编程及上机调试：1．Private Sub Form_Load()Dim x As Integer, s As String, d As IntegerRandomizex = Int(Rnd * 9000 + 1000)s = Trim(CStr(x))d = Val(Right(s, 1) + Mid(s, 3, 1) + Mid(s, 2, 1) + Left(s, 1))ShowPrint "产生的数；"; x; "倒序数"; dEnd Sub2．Private Sub Form_KeyPress(KeyAscii As Integer)Print "输入字符:"; Chr(KeyAscii), "ASCII码为:"; KeyAsciiPrivate Sub Form_DblClick()ClsEnd Sub3．Private Sub Form_Click()MsgBox "在这里显示提示" & vbCrLf & "提示信息", 2 + 16, "请确认"End Sub或Private Sub Form_Click()MsgBox "在这里显示提示" + Chr(13) + "提示信息", vbAbortRetryIgnore _ + vbCritical, "请确认"End Sub第5章程序控制结构二．单选题1.D2. C3.C.4.D.5.B6.C7.A8.A9.D 10.C11.C 12.C 13.B 14.B四．编程及上机调试1. Private Sub Form_Click()Dim x As Integer, y As Integerx = InputBox("请输入一个数值")If x > 20 Theny = x ^ 2 + 3 * x + 2ElseIf x >= 10 Theny = Sqr(3 * x) - 2ElseIf x > 0 Theny = 1 / x + Abs(x)End IfPrint "x="; x, "y="; yEnd Sub（2）Select Case实现：Private Sub Form_Click()Dim x As Integer, y As Integerx = InputBox("请输入一个数值")Select Case xCase Is > 20y = x ^ 2 + 3 * x + 2Case 10 To 20y = Sqr(3 * x) - 2Case Is > 0y = 1 / x + Abs(x)End SelectPrint "x="; x, "y="; yEnd Sub2.Private Sub Form_Click()Dim a As Integer, b As Integer, c As IntegerFor i = 100 To 999a = i \ 100b = (i - a * 100) \ 10c = i Mod 10If a ^ 3 + b ^ 3 + c ^ 3 = i ThenPrint i;k = k + 1If k Mod 2 = 0 Then PrintEnd IfNext iEnd Sub3．Private Sub Command1_Click()p = 60: r = 0.014Dop = p * (1 + r)n = n + 1Loop Until p >= 70Print n; "年后世界人口达到"; p; "亿"End Sub4．Private Sub Command1_Click()Dim s As Single, x As Integer, t As Single, n As Integer x = Val(InputBox("请输入x的值", , 2))s = 1n = 1m = 1Don = n + 1m = -mt = m * n / x ^ (n - 1)If Abs(t) < 0.00001 Then Exit Dos = s + tLoopPrint sEnd Sub第6章数组二．单选题：1.A2.A.3.A4.C5.D6.D7.A8.D9.B 10.B四.编程及上机调试:1.Option Base 1Private Sub Form_Click()Dim a(10) As IntegerDim i As Integer, t As IntegerPrint "数组的原始数据为：";For i = 1 To 10a(i) = Int(11 * Rnd) + 10Print a(i);Next iPrintPrint "变化后数组数据为：";For i = 1 To 5t = a(i)a(i) = a(10 - i + 1)a(10 - i + 1) = tNext iFor i = 1 To 10Print a(i);Next iEnd Sub2.Option Base 1Private Sub Form_Click()Dim a(3, 4) As Integer, i As Integer, j As Integer, k As Integer, p As Integer RandomizeFor i = 1 To 3For j = 1 To 4a(i, j) = Int(90 * Rnd + 10)Print a(i, j);Next jPrintNext iMax = a(1, 1): k = 1: p = 1For i = 1 To 3For j = 1 To 4If a(i, j) > Max ThenMax = a(i, j)k = ip = jEnd IfNext jNext iPrint "最大的数为第" & k & "行，第" & p & "列的数：" & MaxEnd Sub3.Option Base 1Dim a(4, 5) As Integer '在窗体声明段声明数组Dim i As Integer, j As IntegerPrivate Sub cmdmatrix_Click() '"生成数组"按钮RandomizeFor i = 1 To 4For j = 1 To 5a(i, j) = Int(Rnd * 10) '一位的随机数Picture1.Print a(i, j); '输出元素Next jPicture1.PrintNext iEnd SubPrivate Sub cmdcol_Click() '"求列和"按钮Dim colsum As Integertxtcol.Text = ""For j = 1 To 5 '列变量先循环colsum = 0For i = 1 To 4colsum = colsum + a(i, j)Next itxtcol.Text = txtcol.Text & Str(colsum)Next jEnd SubPrivate Sub cmdrow_Click() '"求行和"按钮Dim rowsum As Integertxtrow.Text = ""For i = 1 To 4 '行变量先循环rowsum = 0For j = 1 To 5rowsum = rowsum + a(i, j)Next jtxtrow.Text = txtrow.Text & CStr(rowsum) & vbCrLfNext iEnd SubPrivate Sub cmdclear_Click() '"清除"按钮Picture1.Clstxtcol.Text = ""txtrow.Text = ""End SubPrivate Sub cmdexit_Click() '"结束"按钮EndEnd Sub4. Option Base 1Private Sub Form_Click()Dim a() As Integer, b() As Integer, i As Integer, j As Integer, x As Integer, y As Integer x = InputBox("第一维上界")Do While Not IsNumeric(x)x = Int(InputBox("第一维上界"))Loopy = InputBox("第二维上界")Do While Not IsNumeric(x)y = Int(InputBox("第二维上界"))LoopReDim a(x, y)Print "原数组元素为："For i = 1 To xFor j = 1 To ya(i, j) = Int(90 * Rnd) + 10Print a(i, j);Next jPrintNext iPrint "转置后数组元素为："For i = 1 To yFor j = 1 To xPrint a(j, i);Next jPrintNext iEnd Sub5. Option Base 1Private Sub Form_Click()Dim a(10, 10) As Integer, i As Integer, j As IntegerFor i = 1 To 10For j = 1 To 10If i = j Or i + j = 11 Thena(i, j) = 0Elsea(i, j) = 1End IfPrint a(i, j);Next jPrintNext iEnd Sub6. Option ExplicitOption Base 1Private Sub Command1_Click()Dim i As Integer, j As Integer, n As Integer, k As Integer, a(11) As Integerj = 1For i = 3 To 21 Step 2a(j) = iPrint a(j);j = j + 1Next iPrintn = InputBox("请输入一个数")For i = 1 To 10If n = a(i) ThenFor j = i To 10a(j) = a(j + 1)k = k + 1Next jEnd IfNext iFor i = 1 To 9Print a(i);Next iEnd Sub7. Option Base 1Private Sub Form_Click()Dim a As Variant, k As Integer, i As Integer, j As IntegerDim b As Variantb = Array(17, 35, 128, 235, 89, 121, 143, 189, 231, 94)a = Array(11.3, 12.3, 12#, 11.8, 12.6, 11.6, 12.8, 11.8, 12.4, 12.1)For i = 1 To 9 '对数组a的元素排序k = iFor j = i + 1 To 10If a(k) > a(j) Then k = jNext jIf k <> i Then '数组b的元素随数组a的元素一起变动t = a(i)a(i) = a(k)a(k) = tt = b(i)b(i) = b(k)b(k) = tEnd IfNext iPrint "按名字的排列顺序为："For i = 1 To 10If Len(b(i)) = 2 Then b(i) = "0" & b(i) '补上数组b中长度为２的编号前的"0"Print "第" & i & "名的号码为：" & b(i) & "，成绩为：" & a(i)Next iEnd Sub。
《Visual Basic程序设计教程(第2版)》课后部分编程题参考答案
第1章1.按要求设置窗体属性2．在窗体上建立一个标签Label1。
程序代码如下：Private Sub Form_Click()Label1.Caption="你单击了窗体"End SubPrivate Sub Form_DblClick()Label1.Caption="你双击了窗体"End Sub3．在窗体上建立两个文本框Text1(输入数)、Text2(输出数)和一个命令按钮Command1。
两个文本框的Text属性均为空。
Private Sub Command1_Click()Dim x As Singlex=Val(Text1.Text)Text2.Text=15*xEnd Sub第2章1～3题：按要求完成操作练习。
4．Private Sub Command1_Click()'"最大化"按钮Form1.WindowState=2'最大化End SubPrivate Sub Command2_Click()'"还原"按钮Form1.WindowState=0'还原End SubPrivate Sub Command3_Click()'"最小化"按钮Form1.WindowState=1'最小化End Sub5．在窗体上建立三个文本框Text1(第一个数)、Text2(第二个数)、Text3(计算结果)和一个命令按钮Command1(“计算”)。
Private Sub Command1_Click()Dim x As SingleDim y As Singlex=Val(Text1.Text)y=Val(Text2.Text)Text3.Text=x*x+y*yEnd Sub6.在窗体上建立两个文本框Text1(输入一串字符)、Text2(输出结果)和一个命令按钮Command1。
《Visual Basic程序设计基础》习题参考答案
《Visual Basic程序设计基础》教材习题参考答案第1章Visual Basic 6.0程序设计概述一、判断题1．√2．√3．×说明：同类控件（如两个标签）相互重叠，设计时可以设置“置前”、“置后”属性。
4．√5．×6．√7．×8．√9．√10．×11．√12．√13．×14．√15．×16．√17．√18．√19．√20．√二、选择题1. C2. B 3．D 4．C 5．B 6．A 7．D 8．A 9．B 10．A 11．C 12．D三、填空题1．对象、事件2．属性、方法、事件3．控件、屏幕（Screen）4．对象5．Left、Top 6．属性、<对象名>.<属性名>=<表达式> 7．网格8．F o rm19．Load或Initialize或Resize或Activate（自动执行的先后顺序也按此排列）10．Activate、Deactivate四、程序设计题程序1．界面设计参看图10-1、10-2以及表10-1。
表10-1 实例2各控件的主要属性设置过程设计如下：Private sub Form_Click()Command2.Enabled = FalseEen SubPrivate Sub Command1_Click()13Label2.Visible = FalseLabel1.Caption = Text1.Text + ": 欢迎使用" + Label1.CaptionText1.Visible = FalseCommand1.Enabled = False: Command2.Enabled = TrueEnd SubPrivate Sub Command2_Click()EndEnd Sub程序2．界面设计略，过程设计如下：Private Sub Command1_Click() '字体变大Form1.FontSize = Form1.FontSize + 3Form1.Cls: Print "欢迎使用VB"End SubPrivate Sub Command2_Click() '字体变小Form1.FontSize = Form1.FontSize - 3Form1.Cls: Print "欢迎使用VB"End SubPrivate Sub Command3_Click() '字体加粗Form1.FontBold = TrueForm1.Cls: Print "欢迎使用VB"End SubPrivate Sub Command4_Click() '字体不加粗Form1.FontBold = FalseForm1.Cls: Print "欢迎使用VB"End Sub运行时，不得连续、过多次单击“字体变小”按钮，因为当FontSize属性值小于0会产生适时错误。
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河南大学Visual Basic程序设计课后答案2-1Private Sub Form_Click()ClsEnd SubPrivate Sub Form_DblClick()FontSize = 30fontcolor = vbGreenPrint "hello"FontSize = 90fontcolor = vbRedPrint "OK"End Sub2-2Private Sub Command1_Click()Label1.Move Width * Rnd, Height * RndEnd Sub2-3Private Sub Command1_Click() Label1.Caption = ""End SubPrivate Sub Command2_Click() Label1.Caption = "河南大学" End Sub2-4Private Sub Timer1_Timer() Text1.Text = NowForm1.Caption = NowEnd Sub2-5Private Sub Timer1_Timer()If Form1.BackColor = vbRed Then Form1.BackColor = vbYellow ElseForm1.BackColor = vbRedEnd IfEnd Sub2-6Private Sub Timer1_Timer()If Label1.Left > -Label1.Width Then Label1.Left = Label1.Left + 10 ElseLabel1.Left = WidthEnd IfEnd Sub2-7Private Sub Command1_Click() Text1.Text = ""End SubPrivate Sub Command2_Click() Text1.Text = "河南大学"End Sub2-8Private Sub Text1_Change() Text2 = Text1End Sub2-9Private Sub Command1_Click() FontSize = 20Print "河南大学"FontSize = 15Print "生科院"End SubPrivate Sub Command2_Click() ClsEnd Sub2-10Private Sub Command1_Click() r = Text1.TextText2.Text = 6.28 * rEnd SubPrivate Sub Command2_Click() Text1.Text = ""Text2.Text = ""Text1.SetFocusEnd Sub2-11Private Sub Form_Load()Text1.Text = "河南大学"Text1.FontSize = 36Text1.FontName = "隶书" Text1.BackColor = vbRed Text1.ForeColor = vbGreenEnd Sub2-12Dim s As StringPrivate Sub Command1_Click() s = Text1.TextText1.Text = ""End SubPrivate Sub Command2_Click() Text2.Text = sEnd Sub3-2Private Sub Form_Click()Dim n As Integer Randomizen = Int(90 * Rnd + 10)n1 = n \ 10n2 = n Mod 10Print n, n1 & n2End Sub3-3Private Sub Timer1_Timer()ClsPrint "hehehehehe"Form1.FontSize = Int(71 * Rnd + 10) End Sub3-4Private Sub Command1_Click()n = Asc(Right(Text1, 1))Text2 = Hex(n)End SubPrivate Sub Command2_Click() Text1 = ""Text2 = ""Text1.SetFocusEnd Sub3-5Private Sub Command1_Click()Text2.Text = Date - CDate(Text1)End SubPrivate Sub Command2_Click()Text1.Text = ""Text2 = ""End Sub3-6Private Sub Command1_Click()Text2.Text = Right(Text1, 1) & Mid(Text1, 2, 1) & Left(Text1, 1) End SubPrivate Sub Command2_Click()Text1 = ""Text2 = ""End Sub3-7Private Sub Timer1_Timer()bel1.Caption = "程序设计"bel1.FontSize = (41 * Rnd + 10)bel1.BackColor = RGB(Rnd * 256, Rnd * 256, Rnd * 256) bel1.ForeColor = QBColor(Int(16 * Rnd))End Sub3-8Private Sub Timer1_Timer()bel1.Caption = "程序设计"bel1.FontSize = (41 * Rnd + 10)bel1.BackColor = RGB(Rnd * 256, Rnd * 256, Rnd * 256)bel1.ForeColor = QBColor(Int(16 * Rnd)) End Sub3-9Private Sub Command1_Click()x = Shell("notepad.exe", 1)End SubPrivate Sub Command2_Click()Shell "mspaint.exe", 1End Sub3-10Private Sub Form_Click()Dim X As LongMe.FontSize = 15X = InputBox("输入钱数:")X1 = X \ 100X2 = (X - 100 * X1) \ 50x3 = (X - 100 * X1 - 50 * X2) \ 20x4 = (X - 100 * X1 - 50 * X2 - 20 * x3) \ 10x5 = (X - 100 * X1 - 50 * X2 - 20 * x3 - 10 * x4) \ 5x6 = (X - 100 * X1 - 50 * X2 - 20 * x3 - 10 * x4 - 5 * x5) \ 2x7 = (X - 100 * X1 - 50 * X2 - 20 * x3 - 10 * x4 - 5 * x5 - 2 * x6) \ 1 Print XPrint X1; "张100元"Print X2; "张50元"Print x3; "张20元"Print x4; "张10元"Print x5; "张5元"Print x6; "张2元"Print x7; "张1元"End Sub4-1Private Sub Form_Click()Dim n As Integerp! = InputBox("存款金额")r! = InputBox("利率")n = InputBox("存款年数")s! = Round(p * (1 + r) ^ n, 2)Print "本金+利息:" & s End Sub4-2Private Sub Form_Click()x! = InputBox("输入数据x") y! = InputBox("输入数据y") If x > y ThenPrint "x="; x; "y="; yElsePrint "y="; y; "x="; xEnd IfEnd Sub4-3Private Sub Form_Click()Dim n As Integern = InputBox("输入年份")If n Mod 4 = 0 And n Mod 100 <> 0 Then Print "闰年"ElsePrint "不是闰年"End IfEnd Sub4-4Dim x As Single, y As StringPrivate Sub Command1_Click()x = Text1.TextText2.Text = yIf 90 <= x <= 100 Theny = "优秀"ElseIf 80 <= x < 90 Theny = "良好"ElseIf 70 <= x < 80 Theny = "中等"ElseIf 60 <= x < 60 Theny = "及格"ElseIf x < 60 Theny = "重考"End IfEnd SubPrivate Sub Command2_Click() Text1.Text = ""Text2.Text = ""End Sub4-5Dim x As SinglePrivate Sub Command1_Click() x = Text1.TextIf x >= 90 And x <= 100 ThenText2.Text = "优秀!" ElseIf x >= 80 And x < 90 ThenText2.Text = "良好!"ElseIf x >= 70 And x < 80 ThenText2.Text = "中等!" ElseIf x >= 60 And x < 70 ThenText2.Text = "及格!" ElseIf x >= 0 And x < 60 ThenText2.Text = "重考!"End IfEnd SubPrivate Sub Command2_Click() Text1.Text = ""Text2.Text = ""Me.Text1.SetFocusEnd Sub4-6Dim x As SinglePrivate Sub Command1_Click() x = Text1.TextSelect Case xCase Is >= 90 And x <= 100Text2.Text = "优秀!"Case Is >= 80 And x < 90Text2.Text = "良好!"Case Is >= 70 And x < 80Text2.Text = "中等!"Case Is >= 60 And x < 70Text2.Text = "及格!"Case Is < 60Text2.Text = "重考!" End SelectEnd SubPrivate Sub Command2_Click()Text1.Text = ""Text2.Text = ""Text1.SetFocusEnd Sub4-7Private Sub Command1_Click()x = Text1.TextIf x >= 50 ThenText2.Text = "慢跑"ElseIf x >= 40 And x < 50 ThenText2.Text = "竞走"ElseIf x >= 30 And x < 40 ThenText2.Text = "跳绳"ElseIf x < 30 ThenText2.Text = "长跑"End IfEnd SubPrivate Sub Command2_Click() Text1.Text = ""Text2.Text = ""Text1.SetFocusEnd Sub4-8Private Sub Form_Click()Print Tab(20); "偶数"For i = 1 To 100If i Mod 2 = 0 Then Print i;If i Mod 20 = 0 Then Print iNext iPrintEnd Sub4-9Private Sub Form_Click()For i = 100 To 1000If i Mod 3 = 2 And i Mod 5 = 3 And i Mod 7 = 2 Then Print i Next iPrintEnd Sub5-1Private Sub Form_Click()Dim i%, a(1 To 5) As StringFor i = LBound(a) To UBound(a)a(i) = InputBox("a(" & i & ")")Next iFor i = UBound(a) To LBound(a) Step -1Print a(i)Next iPrintEnd Sub5-2Option Base 1Private Sub Form_Click()Dim i%, a As VariantFor i = 1 To 10a = Array(10, 11, 12, 13, 14, 15, 16, 17, 18, 19) If a(i) Mod 3 = 0 ThenPrint "a(i)=" & a(i)End IfNext iEnd Sub5-3Option Base 1Private Sub Command1_Click() Dim a As Varianta = Array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10) For i = 1 To 9Print a(i + 1),Next iPrint a(1)End SubPrivate Sub Command2_Click() Dim a As Varianta = Array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10) Print a(10),For i = 0 To 8Print a(i + 1),Next iEnd Sub5-4Option Base 1Private Sub Form_Click()Dim a(1 To 5, 1 To 5) As Integer For i = 1 To 5For j = 1 To 5a(i, j) = 10 + Fix(50 * Rnd) Next jNext iFor i = 1 To 5For j = 1 To 5s = s + a(i, j)Print a(i, j),Next jPrint ,Print sNext iFor i = 1 To 5For j = 1 To 5If i = j ThenPrint a(i, j),ElseEnd IfNext jNext iEnd Sub5-5Option Base 1Private Sub Form_Click()Dim A() As IntegerDim max As Integer, bmax As Double Dim min As Integer, bmin As Double M = InputBox("第一维上界！")N = InputBox("第二维上界！") ReDim A(M, N) As IntegerFor i = 1 To MFor j = 1 To NA(i, j) = Fix(900 * Rnd) + 100Next jNext iFor i = 1 To MFor j = 1 To NPrint A(i, j),Next jPrintNext imax = A(1, 1): min = A(1, 1)For i = 2 To MFor j = 2 To NIf A(i, j) > max Then max = A(i, j): bmax = ((i) & (j)) If A(i, j) < min Then min = A(i, j): bmin = ((i) & (j)) Next jNext iPrint "max="; max, "bmax="; bmaxPrint "min="; min, "bmin="; bminErase AEnd Sub5-6Option Base 1Private Sub Form_Click()Dim a() As Integern = InputBox("第一维上界!") ReDim a(n, n) As IntegerFor i = 1 To nFor j = 1 To nIf i = j Thena(i, j) = 1Print a(i, j),Elsea(i, j) = 0Print a(i, j),End IfNext jPrintNext iEnd Sub5-7Option Base 1Private Sub Form_Click()Dim aa = Array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10) For i = 1 To 10Print a(i);Next iPrintFor j = 1 To 7a(j) = a(j + 3)Print a(j);Next jPrintFor i = 1 To 7ReDim Preserve a(i)Next iEnd Sub5-8Private Sub Command1_Click(Index As Integer)n1 = Val(Text1)n2 = Val(Text2)Select Case IndexCase 0Text3 = n1 + n2Case 1Text3 = n1 - n2Case 2Text3 = n1 * n2Case 3Text3 = n1 / n2End SelectEnd Sub6-1Private Sub volume(r As Single, h As Single, v As Single)v = 3.14 * r * r * hEnd SubPrivate Sub Form_Click()Dim a As SingleDim b As SingleDim c As Singlea = InputBox("输入半径!")b = InputBox("输入高度!")volume a, b, cPrint cEnd Sub6-2Function volume(r As Single, h As Single) As Single volume = 3.14 * r * r * hEnd FunctionPrivate Sub Form_Click()Dim a As SingleDim b As SingleDim c As Singlea = InputBox("输入半径!")b = InputBox("输入高度!")c = volume(a, b)Print "圆柱体体积:"; volume(a, b) End Sub6-3Sub week(a As Single)If a = 0 ThenPrint "星期日"ElseIf a = 1 ThenPrint "星期一"ElseIf a = 2 ThenPrint "星期二"ElseIf a = 3 ThenPrint "星期三"ElseIf a = 4 ThenPrint "星期四"ElseIf a = 5 ThenPrint "星期五"ElsePrint "星期六"End IfEnd SubPrivate Sub Form_Click() Dim a As Singlea = InputBox("输入数据") week aPrintEnd Sub。