VB程序設(shè)計(jì)編程考試題及答案

1、VB程序設(shè)計(jì)編程考試題及答案1. 輸入3個(gè)數(shù)，輸出最大的數(shù)Private Sub command1_click()Dim maxFor i = 1 To 3n = Val(InputBox("輸入第" & i & "個(gè)數(shù)")If n > max Thenmax = nEnd IfNextPrint "三個(gè)數(shù)中最大的數(shù)是" ; maxEnd Sub2. 有一元二次方程：aX2+bX+c=0，依次輸入a，b，c，判斷此方程是否有實(shí)根Private Sub Command1_Click()Dim a, b, c, na

2、 = Text1b = Text2c = Text3n = b * b - 4 * a * cIf n >= 0 ThenLabel4 = "方程有根" Else Label4 = "方程無(wú)根"End IfEnd Sub3. 輸入一個(gè)百分制的成績(jī)，若大于等于60，則用消息框彈出，顯示“恭喜！成績(jī)通過(guò)！”，若小于60，則彈出消息框，顯示“抱歉！成績(jī)沒(méi)有通過(guò)！Private Sub Form_Load()Text1 = ""End SubPrivate Sub Command1_Click()Dim nn = Text1If n &

3、gt; =60 ThenVal (MsgBox("恭喜！成績(jī)通過(guò)！")ElseVal (MsgBox("抱歉！成績(jī)沒(méi)有通過(guò)！")End IfEnd Sub4. 輸入一年份，判斷它是否為閏年，并顯示有關(guān)信息。（判斷閏年的條件是：年份能被4整除但不能被100整除，或者能被400整除）Private Sub Command1_Click()Dim y%y = InputBox("請(qǐng)輸入年份")If y Mod 4 = 0 And y Mod 100 <> 0 Or y Mod 400 = 0 ThenVal (MsgBox(&q

4、uot;閏年！")ElseVal (MsgBox("平年！")End IfEnd Sub5. 輸入學(xué)生的百分制成績(jī)，轉(zhuǎn)換輸出為五級(jí)制成績(jī)，90100分轉(zhuǎn)換為優(yōu)秀，8089轉(zhuǎn)換為良好，7079轉(zhuǎn)換為中等，6069轉(zhuǎn)換為及格，060轉(zhuǎn)換為不及格。Private Sub Command1_Click()a = Val(InputBox("請(qǐng)輸入成績(jī)")If a > 100 Then Print "超出范圍"If a >= 90 And a <= 100 Then Print "優(yōu)秀"If a

5、>= 80 And a < 90 Then Print "良好"If a >= 70 And a < 80 Then Print "中等"If a >= 60 And a < 70 Then Print "及格"If a < 60 Then Print "不及格"End Sub6. 隨機(jī)產(chǎn)生一個(gè)三位正整數(shù)，然后逆序輸出，產(chǎn)生的數(shù)與逆序數(shù)同時(shí)顯示。例如，產(chǎn)生246，輸出是642。Private Sub Command1_Click()Dim x%, x1%, x2%, x3%

6、x = Text1x1 = x Mod 10x2 = (x Mod 100) 10x3 = x 100Label1 = x1 * 100 + x2 * 10 + x3End Sub7. 輸入兩個(gè)整數(shù)，求它們的最大公約數(shù)。private Sub Command1_Click() n1 = InputBox("輸入n") m1 = InputBox("輸入m") If m1 > n1 Then m = m1: n = n1 Else m = n1: n = m1 End If r = m Mod n Do While r <> 0 m =

7、n n = r r = m Mod n LoopPrint "m n 的最大公約數(shù)是：" nEnd Sub8. 編程求200-400范圍內(nèi)5的倍數(shù)或7的倍數(shù)之和。(一個(gè)數(shù)如果同時(shí)是7和5的倍數(shù)，則只能加一次。Private Sub Command1_Click()For i = 200 To 400If i Mod 5 = 0 Or i Mod 7 = 0 ThenSum = Sum + iEnd IfNext iFor i = 200 To 400If i Mod 5 = 0 And i Mod 7 = 0 ThenSum = Sum - iEnd IfNext iPri

8、nt “倍數(shù)之和=”; SumEnd Sub9. 計(jì)算100300之間所有能被3和7整除的數(shù)之和Private Sub Command1_Click()Dim iSum = 0For i = 100 To 300If i Mod 3 = 0 And i Mod 7 = 0 ThenSum = Sum + iEnd IfNext iPrint SumEnd Sub10. 分別統(tǒng)計(jì)1-100中，滿足3的倍數(shù)、7的倍數(shù)的數(shù)各有多少。Private Sub Command1_Click()Dim i, s3, s7s3 = 0s7 = 0For i = 1 To 100If i Mod 3 = 0 T

9、hens3 = s3 + 1End IfNext iFor i = 1 To 100If i Mod 7 = 0 Thens7 = s7 + 1End IfNext iPrint "3的倍數(shù)" s3Print "7的倍數(shù)" s7End Sub11. 某次歌曲大獎(jiǎng)賽，有7個(gè)評(píng)委。如果分別輸入7個(gè)評(píng)委對(duì)某個(gè)參賽者的打分?jǐn)?shù)，按照去掉一個(gè)最高分和一個(gè)最低分的計(jì)算辦法，求出該參賽者的平均得分。Private Sub Command1_Click()Dim max, a(1 To 7), min, sFor i = 1 To 7a(i) = Val(InputBox

10、("輸入第" & i & "個(gè)數(shù)")Next imax = a(1)min = a(1)s = a(1)For i = 2 To 7If a(i) > max Then max = a(i)If a(i) < min Then min = a(i)s = s + a(i)Next is = s - min - maxs = s / 5Print "平均分" sEnd Sub12. 輸入一串字符，統(tǒng)計(jì)其中字母A(不區(qū)分大小寫(xiě))出現(xiàn)的次數(shù)。Private Sub Command1_Click()Dim c As

11、 String, a As Integerb = InputBox("請(qǐng)輸入字符")For i = 1 To Len(b) c = UCase(Mid(b, i, 1) If c = "A" Then a = a + 1 End If Next i Print "a出現(xiàn)的次數(shù)：" aEnd Sub13. 我國(guó)目前有13億人口，按人口年增長(zhǎng)率0.8%計(jì)算，多少年后我國(guó)人口將超過(guò)26億。Private Sub Command1_Click()Dim a, ia = 13i = 0Do While a < 26 a = a * (1.

12、008)i = i + 1LoopPrint iEnd Sub14. 小猴有桃若干，第一天吃掉一半多一個(gè)；第二天吃剩下桃子的一半多一個(gè)；以后每天都吃尚存桃子的一半多一個(gè)，到第7天只剩一個(gè)，問(wèn)小猴原有桃多少？Private Sub Command1_Click()Dim a, ia = 1For i = 1 To 6a = 2 * (a + 1)Next iPrint "小猴原有桃" a;”只”End Sub15. 求100以內(nèi)的素?cái)?shù)Private Sub Command1_Click()Dim i, jFor i = 2 To 100For j = 2 To i - 1If

13、 i Mod j = 0 Then Exit ForNext jIf j = i Then Print iNext iEnd Sub16. 百元買(mǎi)百雞問(wèn)題。假定小雞每只5角，公雞每只2元，母雞每只3元，編程求解購(gòu)雞方案。Private Sub Command1_Click()Print "小雞" " " "母雞" " " "公雞"Print ""For x = 1 To 100For y = 1 To 100For z = 1 To 100If 0.5 * x + 2 * y

14、 + 3 * z = 100 ThenPrint "" x; " " y; " " zEnd IfNext zNext yNext xEnd Sub17. 編程求斐波那契數(shù)列前11項(xiàng)。（斐波那契數(shù)列：F(0)=f(1)=1, F(n)=F(n-1)+F(n-2) n>=2 ）Private Sub Command1_Click()Dim F(11), i As LongF(0) = 1F(1) = 1For i = 2 To 10F(i) = F(i - 1) + F(i - 2)Next iFor i = 0 To 11Pri

15、nt F(i);Next iEnd Sub18. 將輸入的字符串以反序顯示。例如：輸入“ASDFGT”，顯示“TGFDSA”P(pán)rivate Sub Command1_Click()Dim a, b, c, d, na = InputBox("輸入字符串")n = Len(a)For b = 1 To Int(n 2)c = Mid(a, b, 1)Mid(a, b, 1) = Mid(a, n - b + 1, 1) Mid(a, n - b + 1, 1) = cNext bPrint aEnd Sub19. 隨機(jī)產(chǎn)生10個(gè)30,100內(nèi)的整數(shù)，求最大值及所對(duì)應(yīng)的下標(biāo)Pr

16、ivate Sub Command1_Click()Dim a(1 To 10), mRandomizeFor I = 1 To 10a(I) = Int(Rnd * 71) + 30Print a(I)Next IMax = a(1)For I = 2 To 10If a(I) > Max Then Max = a(I): m = INext IPrint "max=" MaxPrint "max的下標(biāo)為" mEnd Sub20. 隨機(jī)產(chǎn)生10個(gè)30,100內(nèi)的整數(shù)，求最大值、最小值和平均值。Private Sub Command1_Click(

17、)Dim a(1 To 10)For i = 1 To 10a(i) = Int(Rnd * 71) + 30Print a(i)Next iMax = a(1)Min = a(1)Avg = a(1)For i = 2 To 10If a(i) > Max Then Max = a(i)If a(i) < Min Then Min = a(i) Avg = Avg + a(i)Next iAvg = Avg / 10Print "max=" MaxPrint "min=" MinPrint "avg=" AvgEnd S

18、ub 21. 隨機(jī)產(chǎn)生10個(gè)30,100內(nèi)的整數(shù)，求最小值及所對(duì)應(yīng)的下標(biāo)。Private Sub Command1_Click()Dim a(1 To 10), mRandomizeFor I = 1 To 10a(I) = Int(Rnd * 71) + 30Print a(I)Next IMin = a(1)For I = 2 To 10If a(I) < Min Then Min = a(I): m = INext IPrint "min=" MinPrint "min的下標(biāo)為" mEnd Sub22. 隨機(jī)生成一個(gè)整型的二維數(shù)組，范圍在10

19、,20之間，以下三角形式輸出該數(shù)組。Private Sub Command1_Click()Dim a(1 To 10, 1 To 10), i, j As IntegerFor i = 1 To 10For j = 1 To 10a(i, j) = Int(Rnd *11 + 10)NextNextFor i = 1 To 10For j = 1 To iPrint Spc(3); a(i, j);NextPrintNextEnd Sub23. 隨機(jī)產(chǎn)生10個(gè)1100的正整數(shù)放入數(shù)組，顯示產(chǎn)生的數(shù)，求最大值、最小值、平均值。Private Sub Command1_Click()Dim a(

20、1 To 10)For i = 1 To 10a(i) = Int(Rnd * 101) + 1Print a(i)Next iMax = a(1)Min = a(1)Avg = a(1)For i = 2 To 10If a(i) > Max Then Max = a(i)If a(i) < Min Then Min = a(i) Avg = Avg + a(i)Next iAvg = Avg / 10Print "max=" MaxPrint "min=" MinPrint "avg=" AvgEnd Sub24. 利

21、用隨機(jī)函數(shù)生成一個(gè)4×4的矩陣(即二維矩陣),范圍是20,50內(nèi)的整數(shù),輸出該矩陣所有數(shù)據(jù)之和Private Sub Command1_Click()Dim a%(4, 5), sumFor i = 1 To 4For j = 1 To 4a(i, j) = Int(Rnd * 31) + 20Print a(i, j);sum = sum + a(i, j)Next jPrint '換行Next iPrint "sum=" sumEnd Sub25. 已知有序數(shù)組a()，編程插入x（x的值為14）。數(shù)組a中的元素分別為12，6，4，89，75，63，10

22、0，20，31。Private Sub Command1_Click()Dim a(), i%, k%, x%, n%a = Array(4, 6, 12, 20, 31, 63, 75, 89, 100)n = UBound(a)x = Val(InputBox("請(qǐng)輸入所要插入數(shù)")For k = 0 To nIf x < a(k) Then Exit ForNext kReDim Preserve a(n + 1)For i = n To k Step -1a(i + 1) = a(i)Next ia(k) = xFor i = 0 To n + 1Print

23、a(i);Next iEnd Sub26. 編寫(xiě)一函數(shù)，計(jì)算Double類(lèi)型一維數(shù)組所有元素的平均值。27. 編一子過(guò)程ProcMin,求一維數(shù)組a中的最小值，子過(guò)程的形參自己確定Private Sub command1_Click()Dim a(1 To 10), min, i%For i = 1 To 10a(i) = Int(Rnd * 101)Print a(i);Next iCall ProcMin(a(), min)PrintPrint "min =" minEnd Sub Sub ProcMin(b(), min)Dim i%min = b(LBound(b)For i = LBound(b) + 1 To UBound(b)If b(i