vb实验作业参考答案
vb程序设计实验教程习题答案(精品).doc
实验教材实验-1:单项选择题：AACCC DCBBC2：填空题：(1).bas(2).vbp, ,frm(3)视图工具箱(4)对象(5)属性对象事件方法(6)Windows(7)事件行为(8)窗体模块实验二1：单项选择题：ADCCA BAB DC BBCBC BAB DC 2：基本运算题：(1)27(2) 3.33333333333333(3) 3(4)0(5)-3(6) 2(7)ab33(8)类型不匹配(9) 3(10)AB3实验三1：单项选择题：BCBDC2：填空题：(1)300(2)321456(3)Shanghai(4) 6 7 6(5)True(6)2+3=5(7)”area=” 12.56(8)VISUAL实验四1：单项选择题：CAACA2：填空题：(1)7(2) 3 5(3)输入的数小于0(4) 3(5)False(6)2010 is not leap year.试验五1：单项选择题：ACCAB ACCCB2：填空题：(1)9(2)@n ② 1(3)®Len(a)②n\2 ③Mid(a,(n-i+l),l)④Mid(a,(n-i+l),l)(4)@n Mod 3=1 And n Mod 5=1 And n Mod 7=1 ©While CountN<5(5)Mid(cl,l,i)实验六1：单项选择题：DB DCD ACADD2：填空题:(1)30(2) 3(3)①a(2)②a(3)③a(l)(4)①1 ②2 ③a(i)=a(6-i)(5)①i+j ②0 ③a(i,j)(6)©Print ②k ③a(k,j)=a(j,k)④a(k,j);实验七1：单项选择题：ABBACB2：填空题：(1)15(2)①Preserve a(n+l) ②a(i+l)=a(i) ③Exit For ④a(i+l)=m⑤0 to n+1 (或LBound(a) to UBound(a))(3)d,c,b,a实验八1：单项选择题：CADBD CACB2：填空题：(1)a=9 b=4(2)362516941(2)①a (2)UBound(b)③实验九1:单项选择题：DDDBB CAB CAD2：填空题：(1)①p=p*n ②Fac(n) ③ 10人-6(2)①Max=x ②Max=y ③p ④Max(x,a(n))(3)①number(i) ②n as integer (3)number=number+7* 10A(i-1)实验十1：单项选择题：DC BAB C实验十一1：单项选择题：DADBBB BDD实验十二1：单项选择题：CBCBC CBDAD DBC2：填空题：(1)①Label 1. FondName=Combo 1 .TextCombo2.Text ③ Label 1 .FontBold=True ④ Label 1 .FondItalic=True⑤ Label 1 .FondSize=Combo3.Text(2)①Listl.Text ©List 1 .RemoveitemListl.ListindexListl .Additem List2.Text ④ List2.RemoveItem实验十三实验十四1：单项选择题：DACDAABC2：填空题：(1)ShowFont(2)打开另存为颜色字体打印机帮助(3)工程部件Microsoft Common Dialog Control 6.0(4 ) ShowColor Action=3实验十五1：单项选择题：CB BCB B BAD2：填空题：(1)内建菜单弹出菜单(2)Click(3)工具(4)代码窗口Click(5)相同不同实验十六1：单项选择题：B CAAC ACDDB DCC2：填空题：(1)①Open "c:\studl.txt” For Output As #1Textl.Text=”End”White #l,Textl.Text(2)①For Input ②For Output As #2 ③Not Eof(l)Input #l,strl ⑤ Close #1,#2 ⑥Kill(“c:\old.txt”(3)①For Output ②For Input As #2。
vb实验八综合实验答案
实验八综合实验（4个学时）一、实验目的1．掌握常用控件的使用。
2．掌握下拉菜单的设计方法。
3．掌握创建多重窗体程序的有关技术。
4．了解常用事件及过程。
5．掌握顺序文件的打开、关闭和读写操作。
6．掌握三种鼠标事件的用法。
7．综合运用所学的知识，编写具有可视化界面的应用程序。
二、实验内容利用菜单、对话框、选择结构语句、循环结构语句、多窗体、常用控件、过程等知识点进行综合程序设计。
具体要求：1．在主窗体上，设计下拉式菜单：数值计算画图与动画顺序文件退出n! 编写画图程序读写古诗1+3+…+99 S6.1（说明：S6.1表示实验六的第1题）2．分别单击菜单项n!( 要求从键盘键入n的值)，1+3+5+….99时，要求在主窗体中设置Label1显示题目，Label2显示结果界面如下图。
1）Form1中的代码设计如下：Private Sub accumulate_Click()Dim i As Integer, sum As IntegerFor i = 1 To 99sum = sum + iNext iLabel1.Caption = "1+2+3+4+…+99="Label2.Caption = sumEnd SubPrivate Sub factorial_Click()Dim a As IntegerLabel1.Visible = TrueLabel2.Visible = Truea = InputBox("请输入n的值", "注意")La bel1.Caption = "1×2×…×" & a & "="s = 1For i = 1 To as = s * iNext iLabel2.Caption = sEnd Sub2）将从键盘上输入n = 9时的运行界面剪切下来粘贴在下面。
vb实验报告(答案)
Print "数理化"
End Sub
Private Sub Cmd2_Click()
Print "政史地"
End Sub
心得体会：（可以从以下几个方面来总结：你在上机过程中遇到了哪些难题？你是怎么克服的？你对你的程序的评价？你的收获有哪些？你有什么没有解决的问题？等）
A. Text1.MaxLength = 0 B. Text1.Enabled = False
C. Text1.Visible = FalseD. Text1.Width = 0
5、设置命令按钮的属性时，只有将（A）属性设置为1，Picture属性才有效，否则无效。
A、StyleB、CaptionC、EnabledD、Default
试验报告（1）
院（系）：课程名称：日期：
班级
学号
实验室
专业
姓名
计算机号
实验
名称
VB环境的熟悉与应用
成绩评定
所用
软件
Visual Basic 6.0
教师签名
实
验
目
的
或
要
求
1．熟悉VB的系统环境，了解VB程序的编写、保存和编译的方法过程。
2．初步了解几个常用控件的使用方法。
实
验
步
骤
、
心
得
体
会
1、在vb中____C_____被称为对象。
10、确定一个控件在窗体上位置的属性是__Left_______和___Top______。
11、窗体边框类型的默认值是___2___。
9、Visual Basic集成开发环境主要窗口包括__窗体设计窗口；代码设计窗口；_属性窗口；_工程资源管理器窗口_；_工具箱窗口。
VB实验教材的实验、习题答案
第一章VB开发环境与VB概述习题答案习题一、选择题第二章常用控件与界面设计习题答案习题一、选择题第三章实验与习题实验实验3_1…算术运算Private Sub Command1_Click()Const a As Single = 3, b As Single = 2, c As Single = -1, d As Single = 6Dim x As Single, y As Single, z As Single, m As Singlex = 2: y = 1: z = 1: m = 1List1.ClearList1.AddItem a / (b + c / b)List1.AddItem (x + Sqr(x ^ 2 + 1)) ^ (1 / 3)List1.AddItem ((2 * y) / (a * x + b * y) * (a * x - b * y))List1.AddItem 1 + 1 / (1 + 1 / m)List1.AddItem 1 / 2 * (d / 3) ^ (2 * x)List1.AddItem Log(y + Cos(x) ^ 2)List1.AddItem Abs((Exp(x) + Sin(x) ^ 3) / (x + y))List1.AddItem Log((Exp(x * y) + Abs(1 / Tan(z) + Cos(x) ^ 3)) / (x + y - z))List1.AddItem Sin(45 * 3.1415 / 180) + (Exp(10) + Log(10)) / Sqr(x + y + 1) List1.AddItem Log(a) / Log(b)End Sub…关系运算Private Sub Command2_Click()List1.ClearList1.AddItem Mid("Visual Basic", 1, 12) = Right("Language Visual Basic", 12) List1.AddItem "ABCRG" >= "abcde"List1.AddItem Int(134.69) >= CInt(134.9)List1.AddItem 78.9 / 32.77 <= 97.5 / 43.87 And -45.4 > -4.98List1.AddItem Str(32.345) = CStr(32.345)End Sub…逻辑运算Private Sub Command3_Click()Dim x As Integer, y As IntegerDim C1 As Integer, C2 As Integer, C3 As IntegerC1 = 70: C2 = 80: C3 = 90x = 9: y = -2List1.ClearList1.AddItem x + y < 10 And x - y > 0List1.AddItem (x% >= 0 And y% >= 0) Or (x% < 0 And y% < 0)List1.AddItem x = 0 Xor y = 0List1.AddItem C1 + C2 + C3 >= 255 Or C1 > 90 And C2 > 90 And C3 > 80End Sub实验3_2略实验3_3略实验3_4…零售结算Private Sub Command1_Click()Dim dj As Single, sl As Single, je As Single, n As IntegerLabel1.Caption = "金额："dj = InputBox("请输入商品的单价：", "单价框")sl = InputBox("请输入商品的数量：", "数量框", 1)je = dj * sln = MsgBox("共计金额=" & je, vbOKCancel + vbInformation, "结果") If n = vbOK Then Label1.Caption = "金额：" & Str(je) & "元"End Sub…产生随机数Private Sub Command2_Click()Dim m As Integer, n As IntegerDim x1 As Integer, x2 As Integer, x3 As Integerm = V al(Text1.Text): n = Text2.TextRandomizex1 = Int(Rnd * (n - m + 1) + m)x2 = Int(Rnd * (n - m + 1) + m)x3 = Int(Rnd * (n - m + 1) + m)Label4.Caption = "结果为：" & Str(x1) & Str(x2) & Str(x3)End Sub…求逆序数Private Sub Command3_Click()Dim a As Integer, h As Integer, t As Integer, n As IntegerRandomizea = Int(Rnd * (999 - 100 + 1) + 100)h = Mid(CStr(a), 1, 1)t = Mid(CStr(a), 2, 1)n = Right(CStr(a), 1)Label5.Caption = a & "-->" & Format(n * 100 + t * 10 + h, "000")End Sub实验3_5略习题选择题填空题1、2 -32768~327672、整型长整型单精度双精度3、0 False “”4、Chr(Int(Rnd*(Asc(“L”)-Asc(“C”))+Asc(“C”)))x>0 And y>0 Or x<0 And y<0c>=”a” And c<=”z” Or c>=”A” And c<=”Z”x>=10 And x<20x<z Xor y<z5、False2TrueFalseTrueTrueTrueTrue6、18820010068.568765547、a=1 b=1a=2 b=1a=3 b=1a=4 b=18、Y Mod 4=0 And Y Mod 100<>0 Or Y Mod 400 =09、He Said, “Good morning”.10、EDEF11、(A>0 And A<>Int(A)) And (B<0 And B<>Int(B))12、a+b+c+d(a+b+c+d)/4sumaver13、(f-2*h)/2(4*h-f)/2简答题1、略2、Private Sub Form_Click()Const g = 9.8Dim V0 As Single, t As SingleDim S As SingleV0 = InputBox("请输入V0的值：")t = InputBox("请输入时间t的值：")S = (1 / 2) * g * t ^ 2 + V0 * tMsgBox ("位移量为：" & S)End Sub3、Private Sub Command1_Click()Dim l As Single, w As Single, h As SingleDim s As Singlel = Text1.Textw = Text2.Texth = Text3.Texts = (l * w + l * h + w * h) * 2Label1.Caption = sEnd Sub第四章选择分支与循环实验答案实验4-1方法一：x<=5 ; y方法二：Is<=2 ;Case Else实验4-2Shape1.BackColor=vbRed;Inter=15;Inter=Inter-1;Inter;实验4-3b<cb=aa=k实验4-4方法二：s*n ; t/s<10^-5实验4-5方法一:m>=10^-4 ; (-1)^(n+1)*m实验4-6x2=x3 ; <10^-6实验4-7实验4-8i+2*j+5*k=10 ; n实验4-9题目一：a) 5b)i=16 p=12 n=5c)i=9 p=8 n=1题目二：120 10实验4-10N=1 ；S=N& "*3 " & "+1 "实验4-11Len(st); Ch=Lcase(ch) ; Case Else ; Mid(Char,I,1)&St实验4-12i\100 ; (i Mod 100)\10习题一、选择题二、填空题1．Is=0 ; 1 To 10 ; Is >102. 93. 3 ; 4 154. this is a book ;This Is A Book5. 3 ; 3 ; 3 56. 32 07. 48. 15 19. 1 ; 401 ;10410. 1 2 3 ;1 3; 111. (3)12. 2 0 2413. 10 1414. BAABC CBAABC15. X Mod P=0 ; X=X+1 ;Find=False16. abs(t)<10^(-7) ; s+t17. Mid(n,1,1)=Mid(n,2,1) And Mid(n,3,1)=Mid(n,4,1)S=S+118. Mid(n,i,1)>Mid(n,i+1,1)19. "输入n";N/I=0 ;Print I第五章数组实验5_1Int(90 * Rnd) + 10a(i) = a(21 - i)a(21 - i) = t5_2k = x Mod 10i = i + 15_3s5_4max < a(i, j)row = Icol = j5_51ReDim Preserve prime(m)prime(j)5_6d Mod 25_7Exit Fora(j + 1) = a(j)5_8N – IA(j) = A(j + 1)5_9A(i, 1)JMin = MaxNot Flag5_10ch >= "0" And ch <= "9"P = P & chReDim Preserve C(k)5_11Private Sub Form_Click()Dim x As Integer, i As Integer, k As Integer, j As Integer Dim a() As Integerx = InputBox("输入正整数x=")i = 2Print x; "的质因子为:";Do While x >= iIf x Mod i = 0 Thenk = k + 1ReDim Preserve a(k)a(k) = ix = x \ iElsei = i + 1End IfLoopFor j = 1 To UBound(a)Print a(j);Next jEnd Sub习题一选择题二填空题1.V ariant2.ReDim A(N)A(1)If M < A(I) Then M = A(I)3.Int(26 * Rnd) + 65Chr(t)i + 1 To 10A(i) > A(j)4.InStr(s, ",")Right(s, Len(s) - n)s5. 4 5 66 5 43 2 16.T – 1I + 17.k = 6 - i – jmax = m8.j = aj = j - 39.i + 1i = i + 110. 237三编程题1．Option ExplicitOption Base 1Private Sub Command1_Click()Dim a(10) As IntegerDim i As Integer, max As IntegerFor i = 1 To 10a(i) = Int(90 * Rnd) + 10Print a(i);Next iPrinti = 1max = 0Do While i <= 10If a(i) Mod 3 = 0 ThenIf a(i) > max Thenmax = a(i)End IfEnd Ifi = i + 1LoopIf max = 0 ThenPrint "无要找的数"ElsePrint max & "是最大的能被3整除的数"End IfEnd Sub2．Option ExplicitOption Base 1Private Sub Command1_Click()Dim A() As IntegerDim I As Integer, m As IntegerDim K As IntegerReDim A(10)For I = 1 To 10A(I) = IPrint A(I);Next IPrintm = InputBox("ÊäÈëm")K = 9 + mReDim Preserve A(K)For I = 11 To KA(I) = A(I - 10)Next IFor I = 1 To 10A(I) = A(I + m - 1)Next IFor I = 1 To 10Print A(I);Next IPrintEnd Sub3．Option ExplicitPrivate Sub Command1_Click()Dim I As Integer, J As Integer, K As IntegerDim a() As Integer, n As Integer, p As IntegerDim s As String, Flag As Booleanp = 1For K = 10 To 100I = 1Do While I <= 10 And Not FlagJ = 1Do While J <= 10 And Not Flagn = I ^ 2 + J ^ 2If n = K ThenFlag = TrueReDim Preserve a(p)a(p) = Kp = p + 1s = I & Str(J) & Str(K)List1.AddItem sEnd IfJ = J + 1LoopI = I + 1LoopFlag = FalseNext KEnd Sub4．Option ExplicitPrivate Sub Command1_Click()Dim A(10) As IntegerDim B(10) As Integer, S As StringDim I As Integer, J As Integer, X As IntegerA(1) = Int(90 * Rnd) + 10S = A(1)For I = 2 To 10DoX = Int(90 * Rnd) + 10For J = 1 To I - 1If X = A(J) Then Exit ForNext JIf J = I ThenA(I) = XS = S & " " & A(I)Exit DoEnd IfLoopNext IText1.Text = SB(1) = Int(90 * Rnd) + 10S = B(1)For I = 2 To 10DoX = Int(90 * Rnd) + 10For J = 1 To I - 1If X = B(J) Then Exit ForNext JIf J = I ThenB(I) = XS = S & " " & B(I)Exit DoEnd IfLoopNext IText2.Text = SS = ""For I = 1 To 10For J = 1 To 10If A(I) = B(J) ThenS = S & " " & A(I)End IfNext JNext IText3.Text = SEnd SubPrivate Sub Command2_Click()Text1.Text = ""Text2.Text = ""Text3.Text = ""Text1.SetFocusEnd Sub5．Option ExplicitPrivate Sub Command1_Click()Dim I As Integer, J As IntegerDim a() As Integer, K As Integer, Sum As Integer K = V al(Text1.Text)I = 1DoJ = K Mod 10ReDim Preserve a(I)a(I) = JSum = Sum + JK = K \ 10I = I + 1Loop Until K = 0Text2.Text = SumEnd Sub6．Option ExplicitPrivate Sub Command1_Click()Dim a(100, 2) As Integer, K As IntegerDim I As Integer, J As IntegerDim M As Integer, N As IntegerK = 1For I = 1 To 99For J = 1 To 99If I > J ThenM = I - JN = I + JIf Sqr(M) = Int(Sqr(M)) And Sqr(N) = Int(Sqr(N)) ThenList1.AddItem I & " " & Ja(K, 1) = Ia(K, 2) = JK = K + 1End IfEnd IfNext JNext IEnd Sub第六章参考答案实验实验6-11、Exit Do2、Y(X)3、X >= -1实验6-2【题目二】42 、26、8实验6-31、s1, key2、s As String3、ch >= "a" And ch <= "z"4、Mid(s, i, 1) = Chr(Asc(ch) + k - 26)思考：解密函数Private Sub dec(s As String, k As Integer) '解密过程Dim i As Integer, ch As String * 1For i = 1 To Len(s)ch = Mid(s, i, 1)If "A" <= ch And ch <= "Z" ThenIf Asc(ch) - k < Asc("A") ThenMid(s, i, 1) = Chr(Asc(ch) - k + 26) '小于A的ASCII值则加上26 ElseMid(s, i, 1) = Chr(Asc(ch) - k)End IfElseIf ch >= "a" And ch <= "z" Then '多分支格式，ch介于小写a与z之间If Asc(ch) - k < Asc("a") ThenMid(s, i, 1) = Chr(Asc(ch) - k + 26) '小于a的ASCII值则加上26ElseMid(s, i, 1) = Chr(Asc(ch) - k)End IfEnd IfNext iEnd Sub实验6-41、b() As Integer, st As String2、L <= R3、ReDim Preserve b(R)4、L = L + 1辗转相除法求最大公约数函数Private Function Gcd(ByV al p As Integer, ByV al q As Integer) As IntegerDim r As Integerr = p Mod qDo While r <> 0p = qq = rr = p Mod qLoopGcd = qEnd Function实验6-5【题目一】age = age(n - 1) - 3【题目二】1、(Left + Right) / 22、Left = Mid + 1实验6-61、3 -12、7 43、3 -14、7 0实验6-7【题目一】1、Sqr(2 + t)2、Abs(a - 1) < eps【题目二】1、Dim X As Integer2、"S(" & I & ")=" & S(I)3、(j * i + 1)习题参考答案一选择题二、填空1（1）形式、（2）实在2（1）按地址传递、（2）ByV al3（1）窗体模块、（2）标准模块、（3）类模块4（1） 65（1）4 20 1016（1） 6 26 、（2）-2 987（1）10 6 、（2） 5 -58（1） 6 5 、（2）8 79（1）11 、（2）710（1）Fun(i) 、（2）Fun=p11（1） 4 、（2）20.712（1）29 、（2）28.713（1）k = j 、（2）b() As Integer14（1）gec 、（2）ge 、（3） 315（1）p1 = True And p2 = True 或p1 And p2 、（2）p1 = p2 – 2 、（3）Isp = True 、（4）m Mod i = 016（1）Convert(st) 、（2）Len(s) 、（3）"A" To "F" 、（4）k = k + p * h17（1）isualVi 、（2）sualV isu18（1）s + a 、（2）n + 1 、（3）x As Single, n As Integer 、（4）p * (x + i) / ((2 * i - 1) * i * x) 三、改错题1、Option Base 1Private Sub Command1_Click()Dim A() As Integer, I As Integer, J As Integer, Logic As BooleanDim K As IntegerReDim A(1)A(1) = 50————————'K=1For I = 51 To 149K = 1 '位置错Logic = FalseCall Sub1(A, I, Logic)If Logic ThenK = K + 1ReDim A(K) 'ReDim Preserve A(K)A(K) = IEnd IfNext IFor I = 1 To UBound(A)Text1 = Text1 & Str$(A(I))If I Mod 5 = 0 Then Text1 = Text1 & vbCrLfNext IEnd SubPrivate Sub Sub1(A() As Integer, N As Integer, F As Boolean)Dim I As Integer, J As Integer, Ub As IntegerUb = UBound(A)For I = 1 To UbFor J = 2 To A(I)If A(I) Mod J = 0 And N Mod J = 0 ThenExit For 'Exit SubEnd IfNext JF = TrueNext IEnd Sub2、Option ExplicitOption Base 1Private Sub Command1_Click()Dim I As Integer, Flg As Boolean, S1 As Integer, S2 As IntegerDim J As Integer, K As Integer, P() As IntegerReDim P(1)P(1) = 2For I = 3 To 150 Step 2For J = 2 To Sqr(I)If I Mod J = 0 Then Exit ForNext JIf J > Sqr(I) ThenReDim Preserve P(UBound(P) + 1)P(UBound(P) + 1) = I 'P(UBound(P)) = IEnd IfNext IFor I = 80 To 125If fun(I, P, S1, S2) Then 'If fun(I, P, S1, S2)Text1 = Text1 & Str$(I) & "=" & Str(S1) & "*" & Str$(S2) & vbCrLf End IfNext IEnd SubPrivate Function fun(N As Integer, P() As Integer, S1 As Integer, S2 As Integer) As Boolean Dim I As Integer, J As IntegerFor I = 1 To UBound(P)For J = 1 To UBound(P) - 1If N = P(I) * P(J) ThenS1 = P(I)S2 = P(J)'fun = TrueExit Functionfun = True '位置错End IfNext JNext IEnd Function3、Option ExplicitPrivate Sub Get_Chess(Chess() As Integer, idx As Integer, Over As Integer) 'ByV al idx As IntegerDim Ub As Integer, Counter As Integer, K As IntegerUb = UBound(Chess)Chess(idx) = 0Counter = 1K = 0 '位置错Do Until Counter = Ub - 1Do Until K = 2idx = idx + 1If idx > Ub Then idx = 1K = K + Chess(idx)LoopChess(idx) = 0Counter = Counter + 1LoopFor Over = 1 To UbIf Chess(Over) <> 0 Then Exit ForNext OverEnd SubPrivate Sub Command1_Click()Dim Chess(32) As Integer, I As Integer, J As IntegerDim K As Integer, idx As IntegerFor I = 1 To 32For J = 1 To 32Chess(J) = 1Next JCall Get_Chess(Chess, I, K)If K = 23 ThenText1 = "从第" & Str$(I) & "号棋子开始取"Exit ForEnd IfNext IEnd Sub5、Option ExplicitPrivate Sub Form_Click()Dim S As String, Flg As BooleanDoS = InputBox("输入一个自然数")If S = "" Or Not IsNumeric(S) ThenMsgBox "请重新输入", 48 + vbOKOnlyElseExit DoEnd IfLoopjudge(S, Flg) ' Call judge(S, Flg) 或judge S, Flg If Flg ThenPrint S; "是回文数"ElsePrint S; "不是回文数"End IfEnd SubPrivate Sub judge(Ch As String, F As Boolean)Dim L As Integer, I As IntegerL = Len(Ch)F = True ' F = FalseFor I = 1 To LIf Mid$(Ch, I, 1) <> Mid$(Ch, L + 1 - I, 1) Then Exit Sub Next IF = False ' F = TrueEnd Sub四、编程题1、编程验证任一大于2的偶数可以表示成两个素数之和。
VB编程实验报告答案 完整版
实验一：一、选择1.D2.D3.B4.A5.B6.C7.CD8.D9.D 10. BC11. A 12.D 13. D 14. C 15. A二、填空1.windows2. 中断3.工具箱4.代码5.分类6.form2.show7. 出现语法错误8. 错9. 事件10. 面向对象11.工程文件结构12. 工程13. 设计程序代码14. 双击窗体15. C:\Program Files\Microsoft Visual Studio\VB98 或者VB的安装文件夹16.属性17.方法18.font 19. form_load() 20.对象实验二：一、选择1.B2.C3. B4.C5.C6.C7.B8.B9.D 10. A11. C 12.C 13. C 14. B 15. A16.C 17.B 18.D 19.C 20. C二、填空1. Form_Click()2. Interval、50003..vbp .frm4.left top Height、Width twip5.picture6.load7. locked8. font Alignment9. GotFocus() LostFocus() 10. 属性窗口程序代码实验三：一、选择1.A2.BC3.BC4.A5.A6.A7.BCD8.D9.B 10. B11. B二、判断题不合法的变量：3. 4. 5. 6. 8. 10. 11. 14.15. 16.三、1、abs(x+y)2. (3+x*y)^23. (-b+sqr(b^2-4*a*c))/(2*a)4.sin(30*3.14/180)+exp(2)四、1. int(rnd* 71+20) 或int(rnd* 71)+202. x<0 and y>0 or x>0 and y<0 或者x*y<03. x mod 3=0 or x mod 7=0或x/3=x\3 or x/7=x\74. x>=10 and x<205. x>="A" and x<="Z"6. left(s,3)实验四：一、选择1.C2.D3. C4.D5.A6.D7.B8.B9.A 10. C二、填空1. 48.71E-01, -4.87122. 关系、逻辑、算术3. 900，100，mid(s,2,1)4.m、1,2,3 、print m & "月是第二季度"、end select 三、1. X=4 y=132. 10实验五一、选择B C B A C二、填空（1）for x=2 to 10s*(1-1/x)(2) 1 t>1E-6(3) j t(4) 5 11 5实验六一、选择B C C C D D D D C A实验七一、选择1C 2C 3D 4A 5B 6D 7AB 8A 9A 10A 二、填空（1）n！（2）1+1+2+3+4+……+n（3）n是否是素数（4）冒泡排序（5）递归调用产生斐波那契数列（6）求最大公约数和最小公倍数第八页编程2-1Private Sub Command1_Click()Label3 = Val(Text1) * Val(Text2)End SubPrivate Sub Command2_Click()Label3 = Val(Text1) / Val(Text2)End Sub2-2Private Sub Command1_Click()Picture1.Picture = LoadPicture("d:\tu1.jpg") End SubPrivate Sub Command2_Click()Picture1.Picture = LoadPicture("d:\tu2.jpg") End SubPrivate Sub Command3_Click()Picture1.Visible = FalseEnd Sub2-5Private Sub Form_Load()Image1.Picture = LoadPicture("C:\Documents and Settings\All Users\Documents\My Pictures\示例图片\Sunset.jpg")End SubPrivate Sub Command1_Click()Timer1.Enabled = TrueEnd SubPrivate Sub Command2_Click()Timer1.Enabled = FalseEnd SubPrivate Sub Image1_Click()Timer1.Enabled = FalseEnd SubPrivate Sub Timer1_Timer()Image1.Left = Int(Rnd * (Form1.ScaleWidth - Image1.Width)) Image1.Top = Int(Rnd * (Form1.ScaleHeight - Image1.Height)) End Sub第11页编程2-3Private Sub Command1_Click()Dim x%, y%x = Int(Rnd * 900 + 100)Print "产生的随机数："; xy = (x Mod 10) * 100 + (x \ 10 Mod 10) * 10 + x \ 100Print "反序数："; Format(y, "000")End SubPrivate Sub Command2_Click()Dim x%, y As Stringx = Int(Rnd * 900 + 100)Print "产生的随机数："; xy = Trim(Str(x))Print "反序数：" & Right(y, 1) & Mid(y, 2, 1) & Left(y, 1)End SubPrivate Sub Form_Load()End Sub2-4Private Sub Command1_Click()Dim m%, n%Randomizem = Val(Text1): n = Val(Text2)x = Int(Rnd * (n - m + 1) + m)y = Int(Rnd * (n - m + 1) + m)z = Int(Rnd * (n - m + 1) + m)Label3 = m & "到" & n & "之间的3个随机数为: " & x & Space(3) & y & Space(3) & zEnd SubPrivate Sub Form_Load()End Sub2-5Private Sub Command1_Click()Label1.Caption = DateEnd SubPrivate Sub Command2_Click()Label2.Caption = TimeEnd SubPrivate Sub Command3_Click()Label3.Caption = WeekdayName(Weekday(Date)) End SubPrivate Sub Form_Load()End Sub第十五页2-1方法一Private Sub Command1_Click()Dim x!, a!, aa%, b!, bb%, c!, cc$x = Val(Text1)a = x * 180 / 3.14aa = Int(a)b = (a - aa) * 60bb = Int(b)c = (b - bb) * 60cc = Format(c, "#.000")Label2 = "弧度" & Text1 & "转换为" & aa & "度" & bb & "分" & cc & "秒"End Sub方法二Private Sub Command1_Click()x = InputBox("请输入弧度数值", "弧度转换", 0)xx = Val(x)a = x * 180 / 3.14aa = Int(a)b = (a - aa) * 60bb = Int(b)c = (b - bb) * 60cc = Format(c, "#.000")MsgBox "弧度" & x & "转换为" & aa & "度" & bb & "分" & cc & "秒"End Sub2-2Private Sub Command1_Click()Dim x%x = Val(Text1)If x / 400 = x \ 400 Or x Mod 4 = 0 And x Mod 100 <> 0 ThenLabel2 = Text1 & "年是闰年"ElseLabel2 = Text1 & "年不是闰年"End IfEnd Sub2-3方法二Private Sub Command1_Click()Dim x%, y%, z%x = InputBox("输入第一个数")y = InputBox("输入第二个数") z = InputBox("输入第三个数") If x > y Then t = x: x = y: y = t If y > z Then t = y: y = z: z = t If x > y Then t = x: x = y: y = t Print x, y, zEnd SubPrivate Sub Form_Load()End Sub方法一Private Sub Command1_Click() Dim x%, y%, z%x = Val(Text1)y = Val(Text2)z = Val(Text3)If x > y Then t = x: x = y: y = t If y > z Thent = y: y = z: z = tIf x > y Thent = x: x = y: y = tEnd IfLabel1 = x & Space(5) & y & Space(5) & z End Sub2-4方法一Private Sub Command1_Click()x = Val(InputBox("请输入上网时间:"))If x <> -1 ThenSelect Case xCase Is < 10fei = 25Case 10 To 50fei = x * 2Case 50 To 100fei = x * 1.5Case Is >= 100fei = x * 1End SelectMsgBox "上网费用为:" & fei & "元"End IfPrivate Sub Command2_Click()EndEnd SubPrivate Sub Form_Load()End Sub方法二Private Sub Command1_Click()Dox = Val(InputBox("请输入上网时间:", , -1)) If x <> -1 ThenSelect Case xCase Is < 10fei = 25Case 10 To 50fei = x * 2Case 50 To 100fei = x * 1.5Case Is >= 100fei = x * 1End Selectzongfei = zongfei & Space(3) & fei MsgBox zongfei, , "上网费用为" ElseExit DoEnd IfLoopEnd SubPrivate Sub Command2_Click() EndEnd SubPrivate Sub Form_Load()End Sub2-5第18页2-3Private Sub Command1_Click()n = 0DoIf n Mod 2 = 1 And n Mod 3 = 2 And n Mod 5 = 4 And n Mod 6 = 5 And n Mod 7 = 0 Then Exit Don = n + 1LoopPrint nEnd Sub]2-5Private Sub Command1_Click()x = Val(Text1)y = x * 4n = 0Do While x <= yx = x * (1 + 0.1)n = n + 1Print xLoopPrint x, nEnd Sub2-6Private Sub Command1_Click()n = Val(InputBox("输入计算到第几项:", , 0)) For i = 1 To ns = s + (-1) ^ (i + 1) * iNextPrint n, sEnd SubPrivate Sub Form_Load()-8End Sub2-8Private Sub Command1_Click()Dim s As Double, pi As Doublen = 1: s = 0Do While 1 / (2 * n - 1) >= 0.0001s = s + (-1) ^ (n + 1) * 1 / (2 * n - 1)n = n + 1Looppi = 4 * sPrint piEnd Sub2-9Private Sub Command1_Click()For n = 100 To 999k = Trim(Str(n))If n = Left(k, 1) ^ 3 + Mid(k, 2, 1) ^ 3 + Right(k, 1) ^ 3 Then Print nNextEnd Sub2-11Private Sub Command1_Click()s = 0: Max = 0: Min = 1000For i = 1 To 20Randomizex = Int(Rnd * 50 + 51)Print x;If x > Max Then Max = xIf x < Min Then Min = xs = s + xNext iaver = s / 20PrintPrint "max="; Max, "min="; Min, "aver="; aver End SubPrivate Sub Form_Load()End Sub。
VB实验例题及解答
1、在窗体上创建一个命令按钮command1，完成下面操作：(1) 在form1的load事件中编写代码，使得窗体的前景色（form1.forecolor=vbBlue）为蓝色，窗体的字号为18号（form1.fontsize=18）。
(2) 在command1的click事件中编写代码，定义4个基本整型变量a，b，c，d。
给a赋值为10，b 赋值为3，求a对b整除后的商（c）和余数（d），并将商和余数输出在窗体上（print c，print d）。
解答Private Sub Form_Load()Form1.ForeColor = vbBlueForm1.FontSize = 18End SubPrivate Sub Command1_Click()a = 10b = 3c = a \ bd = a Mod bPrint cPrint dEnd Sub2、输入一个三位数，将它逆置后输出，要求将文本框中的数据按数值型数据进行处理，用算术表达式实现（利用mod、\、*、&等运算符）。
参考界面如下：解答法一Private Sub Command1_Click()Dim n#, a#, b#, c#, m#n = Text1.Texta = n \ 100b = n Mod 10c = (n Mod 100) \ 10Text2.Text = b * 100 + c * 10 + aEnd SubPrivate Sub Command2_Click()Text1.Text = ""Text2.Text = ""End SubPrivate Sub Label2_Click()End Sub法二Private Sub Command1_Click()n = Text1.Texta = Left(n, 1)b = Mid(n, 2, 1)c = Right(n, 1)Text2.Text = c + b + aEnd SubPrivate Sub Command2_Click()Text1.Text = ""Text2.Text = ""Text1.SetFocusEnd SubPrivate Sub Label2_Click()End Sub3、完成上课讲解的分离数字的例子。
vb实验指导后题目-参考答案
期末自测题（A卷）文件部分的选择题要做，其它类型的题目不用做，不作考察选择题其它部分还没有时间做一、单选题（每题1分，共25分）1、211.66.160.1 是Internet上的( )。
(A) IP地址 (B)域名 (C)密码 (D)软件编号2、在以下四个www网址中，（）网址不符合www网址书写规则。
(A) (B) (C) (D) 3、下列字符中，其ASCII码值最小的一个是（）。
(A) A (B) a (C) Z (D) X4、下列软件中属于浏览器的是（）。
(A) Excel (B) Internet Explorer (C) QQ (D) Visual Basic5、电子邮件(E-mail)地址的正确形式是（）。
(A)用户名@域名 (B)用户名#域名 (C)用户名/域名 (D)用户名.域名6、下面变量名不合法的是（）。
(A) a2 (B) abcd (C) a$x (D) Cd_E7、下列表达式中，正确的Visual Basic表达式是（）。
(A) 2sin45° (B) ∏*R2 (C) x÷y×5 (D) （x+1）/（x^2+1）/28、下面逻辑表达式的值为真的是（）。
(A) "A"> "a" (B) "abc"> "bc"(C) "That"> "Thank" (D) 12> 12.19、下列过程定义语句说明不合法的是（）。
(A) Sub f1(ByRef n() As Integer) (B) Sub f1(ByRef n As Integer)(C) Sub f1(ByVal n() As Integer) (D) Sub f1(ByVal n As Integer)10、执行下面的4个打印语句，将出错的是（）。
VB实验及答案
对象名称
属性名称
Form1
Caption
Command1 Caption
Label1
Caption
Label2
Caption
Label3
Caption
Text1、Text2 Text
属性值 象限判断 判断 X= Y=
（3）编写事件代码： Private Sub Command1_Click() Dim x!, y!
Private Sub Command2_Click() Dim f!, c! c = Val(Text2.Text) f = 9 / 5 * c + 32 Text1 = Str(f)
End Sub
（4）程序的运行及保存。 4 求圆的面积及圆柱体的体积，界面如图 2-3 所示。
【步骤】 （1）设计应用程序的界面：在窗体上创建两个命令按钮 Command1 和 Command2，四个标签 Label1、Label2、Label3 和 Label4，四个文本框 Text1、Text2、Text3 和 Text4。 （2）设置对象的属性
【步骤】
（ 1 ） 在 窗 体 中 创 建 一 个 标 签 Label1 、 一 个 命 令 按 钮 Command1。
（2）在属性窗口中设置对象的属性：
对象名称
属性名称
属性值
Form1
Caption
设计界面
Label1
Caption
请留意此处
Command1
Caption
单击此处
（3）在 Command1 的 Click 事件中编写程序代码：
x = Val(Text1) y = Val(Text2) If x > 0 Then
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VB实验作业参考答案作业一窗体设计 (2)作业二计算器 (4)作业三人民币张数求电阻值 (6)作业四（必做）建康城 (8)作业五阶乘累加 (9)作业六（必做）九九乘法表 (11)作业七（必做）I NPUT B OX 函数输入12个整数，赋值给3×4的二维数组 (12)作业八递归函数计算两个正整数的最大公约数，递归公式为 (13)作业九（必做）家电提货单 (15)作业十统计某个文本文件中各英文字母出现的次数，不区分大小写，并将结果打印到窗体上。
(17)作业十一设计一个程序，用于打开1个windows应用程序，如打开“记事本”“画图”、“计算器”等。
(19)作业十二通过菜单选择，对字体、字号进行设置 (21)作业一1.简答题(略)2.编程题：1)单击窗体后在窗体上显示“您好！×××同学”。
要求：（1）程序中用自己的姓名替代“×××”。
（2）文字以红色、仿宋体、加粗、三号字显示，并在字下加横线。
（3）建立一个命令按钮，结束时单击此按钮退出。
答案参照课本P27的例1-6。
2)设计一窗体，窗体上有1个文本框（Text1）、1个命令按钮（Command1），运行时文本框中显示“Visual Basic程序设计”，命令按钮标题为“结束”，文本框及命令按钮能随窗体大小的调整而自动调整大小及位置，其中调整文本框使其：Left=0，Top=0，宽度和高度都为窗体的一半；命令按钮：始终位于窗体右下角位置。
请编写：（1）用代码初始化各控件（提示：可写在Form_Load事件中）。
（2）文本框控件随窗体的大小而调整大小的代码，以及调整命令按钮位置始终位于窗体右下角的代码（提示：调整大小位置的代码写在Form_Resize事件中）。
（3）结束程序运行的代码（命令按钮）。
程序代码：Private Sub Form_Load()Text1.Left = 0Text1.Top = 0Text1.Width = Form1.Width / 2Text1.Height = Form1.Height / 2Command1.Left = Form1.ScaleWidth - Command1.WidthCommand1.Top = Form1.ScaleHeight - Command1.Height End SubPrivate Sub Form_Resize()Call Form_LoadEnd SubPrivate Sub Command1_Click()EndEnd Sub作业二1.填空题：（1）Visual Basic 算术表达式a+b/(b+c/(d+e/Sqr(2*a*b)))对应的数学表达式（ ab ed c b ba 2+++ ）。
（2）产生一个10-99之间的随机整数的表达式（ int(rnd*90)+10 ）。
（3）整形变量X 中存放了一个两位数，要将两位数交换位置，例如，73变成37，实现的表达式是（ (x mod 10)*10+ x\10 ）。
（4）算术表达式Fix(-3.95)+int(-3.02)+Cint(-3.5)+25 mod 10\3的值是（ -10 ）。
（5）表达式Ucase(Mid(″abcdefgh ″,3,4))的值是（ CDEF ）。
2.使用立即窗口显示下列表达式的值（设x=5，y=15，z=3），并分析所输出的结果。
（1）Len(x & y &''z'') （2）Sgn(10 mod 6) & x+y（3）x mod z +x^2\y+z （4）x^2-y*2>3*z and z^3<>x^2（5）(y mod 10) *10+y\10 （6）Mid(str(x^3),2,2) & y+z（7）Ucase(Left(Mid(''This is a Book'',6),4)) （8）Date()+10（9）Timer Mod 3600 （10）Hour(time())3.编程题：（1）编一个模拟简易计算器的程序，运行界面如下图所示：程序代码：Private Sub Form_Load()Label1.Caption = ""End SubPrivate Sub Command1_Click() ' 加法Label1.Caption = "＋"Text3 = Str$(Val(Text1) + Val(Text2))End SubPrivate Sub Command2_Click() ' 减法Label1.Caption = "－"Text3 = Str$(Val(Text1) - Val(Text2))End SubPrivate Sub Command3_Click() ' 乘法Label1.Caption = "×"Text3 = Str$(Val(Text1) * Val(Text2))End SubPrivate Sub Command4_Click() ' 除法Label1.Caption = "÷"Text3 = Str$(Val(Text1) / Val(Text2))End SubPrivate Sub Command5_Click() ' 清除Text1.Text = ""Text2.Text = ""Text3.Text = ""Label1.Caption = ""End Sub（2）编一个程序，当单击窗体时，在窗体上任意位置，随机输出一个大写的英文字母。
提示：随机大写的英文字母由表达chr(Int(Rnd*26)+65)产生，窗体上的随机位置通过设置当前坐标CurrentX,CurrentY属性来确定。
程序代码：Private Sub Form_Click()Dim ch As StringForm1.CurrentX = Form1.ScaleWidth * Rnd '随机确定当前x坐标Form1.CurrentY = Form1.ScaleHeight * Rnd '随机确定当前y坐标ch = Chr(65 + Int(26 * Rnd)) '随机产生一个大写字母Print chEnd Sub作业三1.填空题;（1）下面程序执行的结果是（A=2 B=3 C=2）。
Private Sub Form_Click()a = 1:b = 2:c = 3a = bb = cc = aPrint "a="; a; "b="; b; "c="; cEnd Sub（2）下面程序执行的结果是（5）。
Private Sub Form_Click()a$ = "123": b$ = "456"c = Val(a$) + Val(b$)Print c \ 100End Sub（3）下面程序执行的结果是（BABCBACBC）。
Private Sub Form_Click()x$ = "a": y$ = "b": z$ = "c"x$ = y$ & x$: y$ = y$ & z$: z$ = x$ & z$ & y$Print x$ + y$ + z$End Sub（4）下面程序执行的结果是（ 1 2 False）。
Private Sub Form_Click()Dim x%, y%, z%x = 1: y = 2z = x = yPrint x; y; xEnd Sub（5）当程序运行后，在文本框Text1中输入1234，窗体上的输出结果是（1-12-123-1234-）。
Private Sub Text1_Change()Print Text1 & "-";End Sub2.编程题：1）编写程序，输入一个职工的工资，打印输出发给该职工的人民币张数最少的方案。
程序代码：Public Sub Form_click()Dim hundred As Integer '100元票面数量Dim fifty As Integer '50元票面数量Dim Twenty As Integer '20元票面数量Dim ten As Integer '10元票面数量Dim five As Integer '5元票面数量Dim two As Integer '2元票面数量Dim one As Integer '1元票面数量Dim total As Integer '总计最小钞票数量Dim X As Integer '职工工资Dim tmp As IntegerX = Val(InputBox("输入职工工资 X=？", "输入框"))hundred = X \ 100 '求100元票面数量tmp = X Mod 100 ' 求剩余金额fifty = tmp \ 50tmp = tmp Mod 50Twenty = tmp \ 20tmp = tmp Mod 20ten = tmp \ 10tmp = tmp Mod 10five = tmp \ 5tmp = tmp Mod 5two = tmp \ 2one = tmp Mod 2total = hundred + fifty + Twenty + ten + five + two + oneForm1.Print "100元票" & (hundred) & "张", "50元票" & Str(fifty) & "张"Form1.Print "20元票 " & Str(Twenty) & "张", "10元票" & Str(ten) & "张"Form1.Print "5元票" & Str(five) & "张", "2元票" & Str(two) & "张"Form1.Print "1元票" & Str(one) & "张"Form1.PrintForm1.Print "-----------------------------------------------"Form1.Print "合计票：" & Str(total) & "张"End Sub2）编写程序，使用InputBox函数输入两个电阻的值，求它们并联和串联的电阻值，使用MsgBox消息框输出结果，要求结果保留小数点后三位。