VB程序設(shè)計教程 第四版 課后答案

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1、vb課后習(xí)題答案第一章 習(xí)題參考答案一、 填空題1、對象 事件驅(qū)動2、編譯運(yùn)行模式 解釋運(yùn)行模式二、 簡答題1、 簡述VB的特點(diǎn)。答：可視化的程序設(shè)計方法面向?qū)ο蟮某绦蛟O(shè)計思想事件驅(qū)動的編程機(jī)制結(jié)構(gòu)化的程序設(shè)計語言高度的可擴(kuò)充性強(qiáng)大的數(shù)據(jù)庫訪問能力支持動態(tài)數(shù)據(jù)交換支持對象鏈接與嵌入2、簡述VB的安裝過程。答：向光驅(qū)中放入VB安裝光盤；計算機(jī)將運(yùn)行自動安裝程序，若沒有，執(zhí)行VB目錄下的Setup.exe；根據(jù)提示逐一回答問題，并點(diǎn)擊“下一步”；點(diǎn)擊“完成”；2、 如何啟動VB。答：三種方法：單擊“開始”按鈕，選擇“程序”菜單下的“Microsoft Visual Basic 6.0 中文版”菜單

2、項并單擊；雙擊桌面上的VB6.0快捷圖標(biāo)；在“開始”菜單的運(yùn)行對話框中輸入命令來啟動VB；第二章 習(xí)題參考答案一、選擇題：1-10、 DCACD BCBBC11-20、BADCA BBAAB21-29、AACBB CDDC二、填空題1 窗體、控件2 屬性值3 屬性窗口設(shè)置、代碼窗口設(shè)置4 事件過程5 對象名、下劃線、事件名6 Form_Click第三章 習(xí)題參考答案一、選擇題1、B 2、C 3、A 4、B 5、A 6、C 7、C二、填空題1、 11 字符型、字節(jié)型、整型、長整型、單精度型、雙精度型、貨幣型、邏輯型、日期型、對象型、變體型。String、Byte、Integer、Long、Sin

3、gle、Double、Currency、Boolean、Date、Object、Variant2、 雙引號(英文)、#3、 ASCII、1、24、 public、通用、Dim、Static、Private、Static5、 &、+、+6、 Now()、Time、日期型三、解答題1、(3) 2、(1 )3、（1）常量（關(guān)鍵字） （2）字符型常量 （3）邏輯型常量 （4）變量 （5）字符串常量 （6）變量 （7）字符串常量 （8）變量 （9）日期型常量 （題目應(yīng)是#11/16/1999#） （10）數(shù)值型常量（單精度） 4、315、（1）(1+y/x)/(1-y/x) （2）x3+3*x*y/(2

4、-y)（3）sqr(abs(a*b-c3) （4）sqr(s*(s-a)*(s-b)*(s-c)6、7、（1）13 （2）17（3）#1999-11-12# （4）zxy123ABC8、（1）19 （2）8.16666666666667（3）525 （4）29、（1）-4 （2）2 . 82842712474619 （3）-3 （4）49 （5）”hello” （6）He 7）16 （8） “-459.65” （9）5 10、（4）11、（2）12、（4）第四章 習(xí)題參考答案一、選擇題：17: DAABBCD二、填空題1 500.00%2 將字號擴(kuò)大為原來的二倍3 B三、編程題（略）1文本框、

5、標(biāo)簽和命令按鈕的名稱分別為text1、label1、command1Private Sub Command1_Click()Label1.caption=text1.textCommand1.caption=text1.textEnd Sub2單價、數(shù)量、折扣和應(yīng)付款對應(yīng)的文本框的名稱分別為：text1、text2、text3和text4，計算和清除命令按鈕的名稱分別為：command1和command2。Private Sub Command1_Click()Text4=val(text1)*val(text2)*val(text3)End SubPrivate Sub Command2_C

6、lick()Text1=” : Text2=”: Text3=”: Text4=” End Sub3文本框、“轉(zhuǎn)大寫”命令按鈕和“轉(zhuǎn)大寫”命令按鈕的名稱分別為text1、command1和command2Private Sub Command1_Click()Text1=Ucase(text1)End SubPrivate Sub Command2_Click()Text1=Lcase(text1)End Sub第五章 習(xí)題參考答案一、選擇題：111: CAABBABBBCC二、填空題1(3) 2 1 2 3 32 2 3 4160 59678 7x=5 (或x6 或 x7) 8B9iSum

7、iSum+j 1250三、編程題1Private Sub Form_Click()Dim i%,s%S=0For i = 101 To 200 step 2If i mod 30 thenPrint iS=s+iEnd IfNext iPrint sEnd Sub2Private Sub Form_Click()Dim n%,s&S=1:n=0While s400000 Then n=n-1Print nEnd Sub3Private Sub Form_Click()Dim imin%,imax%,i%,R%Imin=100:imax=20For i=1 to 20R=Int(Rnd*51+5

8、0)If Rimax Then imax=RIf R= A And S = Z Thenx(Asc(S) - 65 + 1) = x(Asc(S) - 65 + 1) + 1End IfNext iFor i=1 To LText2=text2 & Chr(64+i) & “=” & x(i) & “ “If I Mod 7=0 then Text2=text2 & chr(13)+chr(10)Next iEnd Sub3設(shè)學(xué)生成績的平均分已在Mark(1)至Mark(10)中,學(xué)生姓名在name(1)至name(10)中。Private Sub Command1_click()Dim I%

9、,J%,T%,S$For i=1 To 9For j=i+1 To 10If Mark(i)MARK(J) Then T=Mark(i):Mark(i)=Mark(j):Mark(j)=TS=name(i):name(i)=name(j):name(j)=SNext JNext iFor i=1 To 10Print Name(i),Mark(i)Next iEnd Sub第八章 習(xí)題參考答案一、選擇題：110: DCBBDDDBCB二、填空題1a Ubound(b) n=n-12Key=a(i) Index=-1三、編程題1子過程Sub P1(x As Single, esp As Sing

10、le)Dim p!,S!,F!,i%P=1:S=1:i=1:F=xDoP=P*iS=S+F/pLoop Until Abs(F/p)ESP Print sEnd Sub子函數(shù)Function P2(x As Single, esp As Single) As singleDim p!,S!,F!,i%P=1:S=1:i=1:F=xDoP=P*iS=S+F/pLoop Until Abs(F/p)Y ThenF1=XElseF1=YEnd IfEnd Function7Function GDBH(ByVal x%) As StringDim i%For i = 3 To x - 3 Step 2

11、If isp(i) And isp(x - i) ThenGDBH = i & + & (x - i) & = & xExit FunctionEnd IfNextEnd FunctionFunction isp(y%) As Booleani = 2: k = Int(y / 2)Do While i k Thenisp = TrueElseisp = FalseEnd IfEnd FunctionPrivate Sub Form_Click()For i = 6 To 40 Step 2Print GDBH(i)Next iEnd Sub8Function isQO(ByVal x As

12、Integer) As StringIf x Mod 2 =0 ThenisQO=”偶數(shù)”ElseisQO=”奇數(shù)”End IfEnd Function9Function F1(ByVal x As Integer) As BooleanIf x Mod 17 =0 and x Mod 37 =0ThenF1=TrueElseF1=FalseEnd IfEnd FunctionPrivate Sub Form_Click()For i = 1000 To 2000If F1(i) ThenPrint iEnd ifNext iEnd Sub10Sub F1(a() As Integer, By

13、Val L1 As Integer, ByVal L2 AsInteger)Dim L%, U%, x%, i%L = LBound(a): U = UBound(a)If L1 U Or L2 U ThenPrint 位置輸入錯誤！Exit SubEnd IfIf L1 L2 Thenx = a(L1)For i = L1 To L2 + 1 Step -1a(i) = a(i - 1)Next ia(L2) = xElseIf L2 L1 Thenx = a(L1)For i = L1 To L2 - 1a(i) = a(i + 1)Next ia(L2) = xEnd IfEnd Sub

14、第九章 習(xí)題參考答案一、選擇題：13: ADD二、填空題1下拉式 彈出式 2PopupMenu 3Visible Enabled 4-三、編程題(略)第十章 習(xí)題參考答案一、選擇題：13: DBD二、填空題1Load 2窗體模塊 標(biāo)準(zhǔn)模塊 類模塊 3DoEvents三、編程題1(略)2Function F(ByVal x&,ByVal Y&) As IntegerDim t&,r&If xY Then t=x:x=y:y=t R= x Mod yDo While R0X=yY=rR= x Mod yLoopF=yEnd FunctionPrivate Sub Command1_Click()T

15、ext3 = Val(Text1) / F(Val(Text1), Val(Text2)Text4 = Val(Text2) / F(Val(Text1), Val(Text2)End Sub第十一章 習(xí)題參考答案一、選擇題：13: DDA二、填空題6 2AB A 三、編程題1Private Sub Form_MouseMove(Button As Integer, Shift As Integer, xAs Single, Y As Single)Text1 = x: Text2 = YEnd Sub2Dim startX, StartY As Integer 在通用中申明Private S

16、ub Form_MouseDown(Button As Integer, Shift As Integer, x AsSingle, Y As Single)If Button = 2 ThenstartX = x: StartY = YEnd IfEnd SubPrivate Sub Form_MouseMove(Button As Integer, Shift As Integer, x AsSingle, Y As Single)If Button = 1 ThenPSet (x, Y), RGB(0, 0, 0)End IfEnd SubPrivate Sub Form_MouseUp

17、(Button As Integer, Shift As Integer, x AsSingle, Y As Single)If Button = 2 ThenDim r%, c%Dim EndX, EndY As IntegerEndX = x: EndY = Yc = RGB(0, 0, 0)r = Sqr(EndX - startX) 2 + (EndY - StartY) 2)Form1.Circle (startX, StartY), r, cEnd IfEnd Sub第十二章 習(xí)題參考答案一、選擇題：18: BBABBCCA9I H F C L G E B A J K D二、填空題

18、1Drive 2Path Print Dir1.Path3Path 4Hidden system5順序文件 隨機(jī)文件 二進(jìn)制文件6FreeFile7Close #18Open “c:samplesreadme.txt” For Output AS #39Open “c:autoexec.bat” For Intput AS #410Open “c:samplesxscj.dat” For Random AS #3 Len=5411Open “smtext1.txt” For Binary AS #112For Input Eof(1)13KeyAscii END(或者End end eNd e

19、nD) Text1.text三、編程題1在標(biāo)準(zhǔn)模塊中定義Type stuID As String * 12name As String * 8z1 As String * 12z2 As String * 12sex As String * 2jc As Booleanscool As String * 20sx As Integeryw As Integeryy As Integerwl As Integerzf As IntegerEnd TypeDim p As stu 在通用中定義Private Sub CmdAppend_Click()p.ID = Text1p.name = Tex

20、t2p.z1 = Text3p.z2 = Text4p.scool = Text5If Option1.Value = True Then p.sex = 男If Option2.Value = True Then p.sex = 女If Check1.Value = 1 Then p.jc = True Else p.jc = Falsep.sx = Val(Text6) : p.yw = Val(Text7)p.yy = Val(Text8) : p.wl = Val(Text9)p.zf = Val(Text10)Put #1, , pEnd SubPrivate Sub CmdDisp

21、lay_Click()Get #1, Val(txtRecord_No), pText1 = p.ID : Text2 = p.nameText3 = p.z1 : Text4 = p.z2Text5 = p.scoolIf p.sex = 男 Then Option1.Value = True Else Option2.Value = TrueIf p.jc = True Then Check1.Value = 1 Else Check1.Value = 0Text6 = p.sx : Text7 = p.ywText8 = p.yy : Text9 = p.wlText10 = p.zfE

22、nd SubPrivate Sub Command3_Click()Text1 = : Text2 = Text3 = : Text4 = Text5 = : Text6 = Text7 = : Text8 = Text9 = : Text10 = End SubPrivate Sub Form_Load()Open App.Path & stu.dat For Random As #1 Len = Len(p)End SubPrivate Sub Form_Unload(Cancel As Integer)Close #1End SubPrivate Sub Text10_GotFocus(

23、)Text10 = Val(Text6) + Val(Text7) + Val(Text8) + Val(Text9)End Sub2.3.4.Private Type booksid As String * 10name As String * 8sex As String * 2math As Integereng As Integerele As IntegerEnd Type成績輸入Private Sub Command1_Click()Dim b As booksOpen c:stu.dat For Append As #1b.id = InputBox(請輸入學(xué)號)b.name =

24、 InputBox(請輸入姓名)b.sex = InputBox(請輸入性別)b.math = InputBox(請輸入數(shù)學(xué)成績)b.eng = InputBox(請輸入英語成績)b.ele = InputBox(請輸入電子成績)Write #1, b.id, b.name, b.sex, b.math, b.eng, b.eleClose #1End Sub不及格人員輸出Private Sub Command2_Click()Dim a, b, cOpen c:stuo.dat For Input As #1While Not EOF(1)Input #1, a, b, cIf c = 數(shù)學(xué)

25、 Then List1.AddItem bIf c = 英語 Then List2.AddItem bIf c = 電子 Then List3.AddItem bWendClose #1End Sub將不及格人選出存入stuo.datPrivate Sub Command3_Click()Dim a, b, c, d, e, fDim k%Open c:stu.dat For Input As #1Open c:stuo.dat For Output As #2While Not EOF(1)Input #1, a, b, c, d, e, fIf d 60 Then Write #2, a, b, 數(shù)學(xué)If e 60 Then Write #2, a, b, 英語If f 60 Then Write #2, a, b, 電子WendClose #1Close #2End Sub