VB编程.docx

1、VB编程1、求100以内的素数。Private Sub Form_Click()Dim i%, j%For i = 2 To 100 For j = 2 To i - 1 If i Mod j = 0 Then Exit For Next j If j = i Then Print iNext iEnd Sub2、从键盘输入任意长度的字符串，要求将字符顺序倒置，例如，将输入的“ABCDEFG”变换成“GFEDCBA”。Private Sub Command1_Click()Dim a$, I%, c$, d$, n%a = InputBox$(输入字符串)n = Len(a)For I = 1

2、 To Int(n 2) c = Mid(a, I, 1) Mid(a, I, 1) = Mid(a, n - I + 1, 1) Mid(a, n - I + 1, 1) = c Next I Print a End Sub3、计算0200之间所有能被11或5整除的数之和Private Sub Form_Click()Dim n%, i%n = 0 For i = 1 To 200 If i Mod 11 = 0 Or i Mod 5 = 0 Then n = n + i End If Next i Print nEnd Sub4、输入一年份，判断它是否为闰年，并显示有关信息。（判断闰年的条

3、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(请输入年数)If y Mod 4 = 0 And y Mod 100 0 Or y Mod 400 = 0 Then MsgBox (y & 年是闰年)Else MsgBox (y & 年是平年)End IfEnd Sub5、已知x,y,z 3个变量中存放了3个不同的数，比较它们的大小并进行调整，使得xy y Then t = x: x = y: y = tIf x z Then t = x: x = z: z = tIf y z Then

4、t = y: y = z: z = tPrint 排序后; x; ; y; ; zEnd Sub6、求s=a+aa+aaa+.aaaaa（n个a），其中a和n的值随机产生，a的范围是1,9的整数，n的范围是5,10。如a=3,n=6,则s=3+33+333+3333+33333+333333。编程确定n和a的值，并计算s。Private Sub Form_Click() Dim s!, t!, i!, a%, n% a = Int(Rnd * 9 + 1) n = Int(Rnd * 6 + 5) t = 0: s = 0 Print a=; a, n=; n For i = 1 To n t

5、 = t * 10 + a s = s + t Print t; Next i Print Print s=; s End Sub7、计算100300之间所有能被3和7整除的数之和。Private Sub Form_Click()For i = 100 To 300If i Mod 21 = 0 Thens = s + iPrint i;End IfNext iPrintPrint s=; sEnd Sub8、编程求200-400范围内5的倍数或7的倍数之和。(一个数如果同时是7和5的倍数，则只能加一次。)Private Sub Command1_Click() Dim s1%,s2%,s3%

6、,i% S1=0S2=0For i=200 to 400If i mod 5 =0 or i mod 7=0 then s1=s1+iEnd ifNext i For i=200 to 400If i mod 5 =0 or i mod 7=0 then s2=s2+iEnd ifNext iS3=s1-s2Print s3End sub9、找出被3、5、7除，余数为1的最小的5个正整数。Private Sub Command1_Click()Dim CountN%, n%CountN = 0n = 1Do n = n + 1 If n Mod 3 = 1 And n Mod 5 = 1 An

7、d n Mod 7 = 1 Then Print n CountN = CountN + 1 End If Loop Until CountN = 5 End Sub10、某次歌曲大奖赛，有7个评委。如果分别输入7个评委对某个参赛者的打分数，按照去掉一个最高分和一个最低分的计算办法，求出该参赛者的平均得分。Private Sub Command1_Click()Dim mark!, max!, min!, aver!, i%aver = 0For i = 1 To 7 mark = InputBox(输入第 & i & 位评委的打分)If i = 1 Then max = mark: min

8、= markElse If mark max Then max = markEnd Ifaver = aver + markNext iaver = (aver - min - max) / 5Print averEnd Sub11、编程显示100500之间所有的水仙花数之和。(水仙花数是3位数，其各位数之和等于该数本身)Private Sub Form_Click()Dim i%, s%, s1%, s2%, s3%, a!a = 0For i = 0 To 400s = 99 + is1 = (s Mod 100) 10s2 = s Mod 10s3 = s 100If s1 3 + s2

9、 3 + s3 3 = s Thena = s + aEnd IfNext iPrint aEnd Sub12、随机产生一个三位正整数，然后逆序输出，产生的数与逆序数同时显示。例如，产生246，输出是642。Dim a%, m%, b%, c%, d%Private Sub Form_Click() a = Int(Rnd * 900 + 100) Print a d = (a Mod 10) * 100 b = (a Mod 100) - (a Mod 10) c = a 100 m = c + b + d Print mEnd Sub13、从键盘输入三角形的三条边a，b，c的值，根据其数值

10、，判断能否构成三角形。Private Sub Form_Click()Dim a%, b%, c% a = Val(InputBox(input a) b = Val(InputBox(input b) c = Val(InputBox(input c)If a + b c And a + c b And b + c a Then MsgBox (能构成三角形)Else MsgBox (不能构成三角形)End IfEnd Sub14、已知数组a()，编程删除a中第5个元素。数组a中的元素分别为12，6，4，89，75，63，100，20，31。Private Sub Form_Click()D

11、im a(), i%, n% a = Array(12, 6, 4, 89, 75, 63, 100, 20, 31) n = UBound(a) For i = 0 To n Print a(i); Next i PrintFor i = 5 To n a(i - 1) = a(i)Next i n = n - 1ReDim Preserve a(n)For i = 0 To n Print a(i);Next iPrintEnd Sub15、随机生成一个整型的二维数组，范围在10,20之间，以上三角形式输出该数组。（下三角、全部元素）Dim a%(4, 4)Dim a%(4, 4)Priv

12、ate Sub Command1_Click()Picture1.ClsFor i = 0 To 4 For j = i To 4 Picture1.Print Tab(j * 6); a(i, j); Next j Picture1.PrintNext iEnd SubPrivate Sub Form_Load()For i = 0 To 4 For j = 0 To 4 a(i, j) = Int(Rnd * 11 + 10) Next jNext iEnd Sub16、利用随机函数生成一个44的矩阵(即二维矩阵),范围是20,50内的整数,输出每行中的最大值和下标。Private Sub

13、 Form_Click()Dim a%(3, 3), s0%, s1%, s2%, s3%, b0%, b1%, b2%, b3%Max = 40For i = 0 To 3 For j = 0 To 3a(i, j) = Int(Rnd * 31 + 20)Print Tab(j * 5); a(i, j);If a(0, j) = Max Then s0 = a(0, j): b0 = jIf a(1, j) = Max Then s1 = a(1, j): b1 = jIf a(2, j) = Max Then s2 = a(2, j): b2 = jIf a(3, j) = Max T

14、hen s3 = a(3, j): b3 = jNext jNext iPrintPrint 第一行; s0; (; 0; b0; )Print 第二行; s1; (; 1; b1; )Print 第三行; s2; (; 2; b2; )Print 第四行; s3; (; 3; b3; )End Sub17、利用随机函数生成一个44的矩阵(即二维矩阵),范围是40,80内的整数，求它的最大值及所对应的下标。Private Sub Form_Click()Dim a%(3, 3)Min = 80For i = 0 To 3 For j = 0 To 3a(i, j) = Int(Rnd * 41

15、 + 40)Print Tab(j * 5); a(i, j);If a(i, j) = Min ThenMin = a(i, j): b = i: c = jEnd IfNext jNext iPrintPrint 最小值为; MinPrint 其下标为; (; b, c; )End Sub18、输入一系列字符串，编程求出长度最大的字符串并输出其所对应的次序。Private Sub Form_Click()Dim a(5) as string,b(4) as integer,t%,max%,imax%For i =1 to 5a(i)=inputbox(a)Next iFor i =0 to

16、 4b(i)=len(trim(a(i)Next iMax=1For i =0 to 4If maxb(i) then max=b(i):imax=iNext iPrint max=;a(i)Print cixu=,imax+1End sub19、利用随机函数生成一个44的矩阵(即二维矩阵),范围是20,50内的整数,输出该矩阵所有数据之和 Private Sub Form_Click() Dim a%(3, 3) For i = 0 To 3 For j = 0 To 3 a(i, j) = Int(Rnd * 31 + 20) Print Tab(j * 5); a(i, j); Next

17、 j Next i s = a(0, 0) + a(1, 1) + a(2, 2) + a(3, 3) + a(3, 0) + a(2, 1) + a(1, 2) + a(0, 3) Print s;End Sub20、输入一系列字符串，将字符串按递减次序排列。请编程实现。Dim a() As String, n%, i%, j%Private Sub Command1_Click()n = Text1ReDim a(1 To n) As StringFor i = LBound(a) To UBound(a)a(i) = InputBox(请输入字符串)Picture1.Print a(i)

18、; Spc(1);Next iEnd Sub Private Sub Command2_Click()For i = 1 To n For j = 1 To n - i If a(j) amax Then amax = a(i) If a(i) a(1) Then maxa = a(i): m = i End IfNext iFor i = 1 To 10 Print a(i);Next i Print maxa= & maxa; 下标为 & mEnd Sub25、定义三个44的二维数组A,B,C，A和B中的元素均随机生成，数组A范围是120，数组B的范围是100200，数组C是A和B相加得到

19、的。请编程生成并输出A,B,C。Private Sub Command1_Click() Dim a(3, 3), b(3, 3), c(3, 3), t%, m% For i = 0 To 3 For j = 0 To 3 a(i, j) = Int(Rnd * 20 + 1) Picture1.Print a(i, j); Next j Next i Picture1.Print For i = 0 To 3 For j = 0 To 3 b(i, j) = Int(Rnd * 101 + 100) Picture1.Print b(i, j); Next j Next i Picture

20、1.Print For i = 0 To 3 For j = 0 To 3 c(i, j) = a(i, j) + b(i, j) Next j Next iEnd Sub26、利用随机函数生成一个44的矩阵(即二维矩阵),范围是20,50内的整数，求它的两条对角线上元素之和。Private Sub Form_Click()Dim a%(3, 3)For i = 0 To 3 For j = 0 To 3a(i, j) = Int(Rnd * 31 + 20)Print Tab(j * 5); a(i, j);Next jNext is = a(1, 1) + a(2, 2) + a(3, 3

21、) + a(0, 0) + a(0, 3) + a(1, 2) + a(2, 1) + a(3, 0)PrintPrint 两对角线上元素之和为:; sEnd Sub27、利用随机函数生成一个44的矩阵(即二维矩阵),范围是40,80内的整数，求它的最小值及所对应的下标。Private Sub Form_Click()Dim a%(3, 3)Min = 80For i = 0 To 3 For j = 0 To 3a(i, j) = Int(Rnd * 41 + 40)Print Tab(j * 5); a(i, j);If a(i, j) = Min ThenMin = a(i, j): b

22、 = i: c = jEnd IfNext jNext iPrintPrint 最小值为; MinPrint 其下标为; (; b, c; )End Sub28、随机生成一个整型的二维数组，范围在10,20之间，以上三角形式输出该数组。（下三角、全部元素）Dim a%(4, 4)Dim a%(4, 4)Private Sub Command1_Click()Picture1.ClsFor i = 0 To 4 For j = i To 4 Picture1.Print Tab(j * 6); a(i, j); Next j Picture1.PrintNext iEnd SubPrivate

23、Sub Form_Load()For i = 0 To 4 For j = 0 To 4 a(i, j) = Int(Rnd * 11 + 10) Next jNext iEnd Sub29、有10个评委对歌手进行打分（分数存在A数组中）要求编程计算出歌手平均得分（按去掉一个最高分和一个最低分的计算方法计算。）a = Array(98, 97, 95, 91, 90, 99, 93, 94, 93, 96) Private Sub Form_Click()Dim a(), max%, min%, imax%, imin%, s!a = Array(98, 97, 95, 91, 90, 99, 93, 94, 93, 96)n = UBound(a)For i = 0 To n Print a(i);Next iPrintmin = a(0): imin = 0For i = 0 To n If a(i) max Then max = a(i): imax = iNext iPrint max=; imax=; imaxReDim Preserve a(n - 2)s