VB题库程序设计.doc

题目：求1020之间所有素数的乘积并输出在窗体上答案：- Dim i As Integer Dim j As Integer Dim b As Boolean S = 1 b = False For i = 10 To 20 For j = 2 To i - 2 If i Mod j = 0 Then b = True End If Next If b = False Then s = s * i End If b = False Next Print s-题目：求1 - 1/2 + 1/3 - 1/4 + + 1/99 - 1/100的值。答案：- Dim i As Integer For i = 1 To 100 If i Mod 2 = 1 Then j = j + 1 / i ElseIf i Mod 2 = 0 Then j = j - 1 / i End If Next Print j-题目： S=1+1/4+1/9+1/16+1/25+1/100答案：-Dim i As Integers = 0For i = 1 To 10 s = s + 1 / (i 2)NextPrint s-题目：求1+2+3+5+8+13+前20项的和。答案：- Dim i As Integer Dim j(1 To 20) As Integer For i = 1 To 20 If i 3 Then j(i) = i Else j(i) = j(i - 1) + j(i - 2) End If sum = sum + j(i) Next Print sum-题目：求10! 的值，并将结果输出到窗体上。答案：- Dim i As Integer sum = 1 For i = 1 To 10 sum = sum * i Next Print sum-题目：已知sum = 1-1/3!+1/5!-1/7!+1/9!,答案：-Dim i As IntegerDim n As Integeri = 1p = 1Do While i = 9 p = p * i 阶乘 If i Mod 2 = 1 Thenn = n + 1sum = sum + (-1) (n - 1) / p End If i = i + 1LoopPrint sum-或Dim I As IntegerDim n As IntegerI = 1p = 1For I = 1 To 9p = p * IIf I Mod 2 = 1 Thenn = n + 1Sum = Sum + (-1) (n - 1) / pEnd IfNextPrint Sum-题目：求100以内偶数的和，并将结果输出在窗体上。 将结果存入变量SUM中-答案：- Dim i As Integer For i = 1 To 100 If i Mod 2 = 0 Then sum = sum + i End If NextPrint sum或者Dim i As IntegerFor i = 2 To 100 Step 2sum = sum + iNextPrint sum-题目： s=20+21+22+263，求s的值，并将结果存储到变量S中。-答案：-Dim i As Integeri = 20Do While i 3000 then exit for endif endifnextPrint sum-题目：求3+6+9+12+15+18+300的和，并将结果输出到窗体上。将结果存入变量 SUM中。-答案：- Dim i As Integer For i = 3 To 300 If i Mod 3 = 0 Then sum = sum + i End If Next Print sum-或者Dim i As IntegerFor i = 3 To 300 Step 3 Sum = Sum + iNextPrint Sum-题目：已知s=1+1/3!+1/5!+1/7!+1/9!,请将s结果值输出到窗体上。使用do while.loop语句完成程序 -答案：-Dim i As Integeri = 1p = 1Do While i = 9 p = p * i If i Mod 2 = 1 Thens = s + 1 / p End Ifi = i + 1Loop Print ssum=s-题目：求1-100中为5或7的倍数的和。请将结果输出到窗体上,并存入所给变量SUM中。-答案：-Dim i As Integer i = 1 Do While i = 100 If i Mod 5 = 0 Or i Mod 7 = 0 Then Sum = Sum + i End If i = i + 1LoopPrint Sum-题目：计算从1开始到n的自然数中偶数的平方的和。-答案：-Dim sum As IntegerDm i As Integern = Val(InputBox(n)sum = 0 For i = 2 To n Step 2 sum = sum + i * i Next Print sum-题目：计算如下公式的值: y=11/31/51/7.1/(2m+1) 例如：若m=9，则应输出：2.133255-答案：- Dim sum As Double Dim i As Integer m = Val(InputBox(输入m) sum = 1 For i = 1 To m sum = sum + 1 / (2 * i + 1) Next Print sum-题目：计算y=1/21/41/6.1/2m 例如：若m=9，则应输出：1.41448412698413-答案：- Dim y As Double Dim i As Integer m = Val(InputBox(输入m) For i = 1 To m y = y + 1 / (2 * i) Next Print y-题目：求1到m之间的偶数之积。-答案：- Dim y As Double Dim i As Integer y = 1 For i = 1 To m If i Mod 2 = 0 Then y = y * i End If Next Print y-题目：计算n门课程的平均值，计算结果作为函数值返回。 例如，若有5门课程的成绩是：92，76，69， 58，88，则函数的值为76.6。-答案：- Dim i As Integer Dim y As Single For i = 1 To n y = y + a(i) Next fun = y / n-题目：计算y=1/2!1/4!.1/m! (m是偶数)-答案：-Dim i As Integer, j As Integer, t As Integery = 0t = 1m = Val(InputBox(m) For i = 2 To m Step 2 For j = 1 To i t = t * j Next y = y + 1 / tNextPrint y-题目：计算并输出给定整数n的所有因子之和（不包括1与自身）。规定n的值不大于1000 例如：n的值为855时，应输出704。-答案：- Dim s, i As Integer n = Val(InputBox(n) For i = 2 To n - 1 If n Mod i = 0 Then s = s + i End If Next print s-题目：求两个数m,n的最大公约数p和最小公倍数q-答案：-m = Val(InputBox(m)n = Val(InputBox(n)mn = m * nIf m n Then t = m: m = n: n = tr = m Mod nDo While r 0 m = n n = r r = m Mod n Loop Print 最大公约数 =; n Print 最小公倍数= ; mn / n-题目： y=1/5+1/6+1/7+1/8+1/9+1/10.+1/(m+5) 例如：若m=9，则应输出：1.168229-答案：- Dim y As Double Dim i As Integer m = Val(InputBox(m)For i = 0 To m y = y + 1 / (i + 5) Next Print y-题目：求一个四位数的各位数字的立方和-答案：-Dim d As Integer, k As Integer, s As Integern = Val(InputBox(n)Do While n 0 d = n Mod 10 s = s + d * d * d n = n / 10 Loop Print s-题目：判断一个整数w的各位数字平方之和能否被5整除 , 可以被5整除则返回1 , 否则返回0-答案：-Dim k As Integer, s As Integerw = Val(InputBox(w)Do While w 0 s = s + (w Mod 10) * (w Mod 10) w = w / 10LoopIf s Mod 5 = 0 Then Print 1Else Print 0End If-题目：将一张面值为100元的人民币等值换成100张5元、1元和0.5元的零钞，要求每种零钞不少于1张，问有哪几种组合？将组合数存入变量OUT中。-答案：-Dim n As IntegerDim i%, j%, k%Print 5? 1? 0.5?For i = 1 To 20 For j = 1 To 100 - i k = 100 - i - j If 5# * i + 1# * j + 0.5 * k = 100 Then Print i, j, k n = n + 1 End If Next j Next i out = n-题目：判断一个数是否是素数。-答案：-Dim i As Integerm = Val(InputBox(m)p = TrueFor i = 2 To Int(Sqr(m)If m Mod i = 0 Thenp = FalseMsgBox 不是素数End IfNext iIf p = True ThenMsgBox 是素数End If-题目：求200300之间既能被3整除又能被7整除的数。并求出所有数之和存入变量SUM中-答案：-Dim i As IntegerFor i = 201 To 300 If (i Mod 3) = 0) And (i Mod 7) = 0) Then Print (CStr(i) sum = sum + i End IfNextPrint sum-题目：求出100以内所有素数的和，并将结果输出到窗体上,并存入所给变量SUM中。-答案：-Dim i As Integer Dim j As Integer Dim k As Integer Dim b As Boolean b = False For i =2 To 100 b = False j = CInt(Sqr(i) For k = 2 To j If i Mod k = 0 Then b = True End If Next If b = False Then sum = sum + i End If Next Print sum-【程序改错】-题目：求s=2!+4!+6!+8!，阶乘的计算用Function过程fact实现-注意：不可增加或删除程序行，也不可以更改程序结构-Private Sub Form_Click()dim i as integer,s as Long*FOUND*For i = 2 To 8 s = s + fact(i) Next iPrint sEnd Sub*FOUND*Public Function fact( )dim t as Longdim i as integert = 1For i = 1 To nt = t * iNext I*FOUND*fact=iEnd Function答案： 1).For i = 2 To 8 Step 2 2). Public Function fact(ByVal n As Integer) 或 Public Function fact(n As Integer) 或 Public Function fact(n%) 或 Public Function fact(n) 或 Public Function fact(ByVal n%) 或 Public Function fact(ByVal n) 3). fact = t-题目：输出所有的三位数，它满足该数中有某两位为相同的数，且该数是一个完全平方数。求出所有这些数的和，并将结果存入变量SUM中。-答案：-dim a as integer,b as integerdim b3 as integer,b2 as integer,b1 as integerfor a=10 to 31b=a*ab3=b100b2=(b10) mod 10b1=b mod 10if b1=b2 or b1=b3 or b2=b3 then? a,bsum=sum+bend ifnext a? sum-题目：输出一个由数字组成的倒三角形，请将结果存入变量S中(要求利用msgbox函数)显示结果，使用for.next语句完成程序)-答案：-Dim tmp As StringDim i As Integer, j As Integertmp = For i = 10 To 1 Step -1For j = 0 To i - 1 tmp = tmp & CStr(j)Nexttmp = tmp & vbCrLfNextMsgBox tmps = tmp-题目：计算从1开始到n的自然数中偶数的平方的和。-答案：- Dim sum As Integer, i As Integer sum = 0 For i = 2 To n Step 2 sum = sum + i * i Next fun = sum-题目：求某个数的平方根。算法思想：对于一个问题的求解x，可由给定的一个初值x0，根据某一迭代公式得到一个新的值x1，这个新值x1比初值x0更接近要求的值x；再以新值作为初值，即：x1x0,重新按原来的方法求x1,重复这一过程，直到|x1-x0| 0.00001 Fsqrt = x1-题目：将一个十进制整数m转换成 r(216)进制字符串。方法：将m不断除 r 取余数，直到商为零，以反序得到结果。下面写出一转换函数，参数idec为十进制数，ibase为要转换成数的基（如二进制的基是2，八进制的基是8等），函数输出结果是字符串?-答案：- Dim strDecR$, iDecR% strDecR = Do While idec 0 iDecR = idec Mod ibase If iDecR = 10 Then strDecR = Chr$(65 + iDecR - 10) & strDecR Else strDecR = iDecR & strDecR End If idec = idec ibase Loop TrDec = strDecR-题目：对字符串进行加密处理。 加密过程:将每个字母C加一序数K5，即 c=chr(Asc(c)-5),这时 ZU， zu，YT当加序数后的