VB常见20道编程代码-.pdf

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1、20 道编程代码1.1000 以内的所有完数Private Sub Command1_Click()Dim n As Integer Dim i As Integer Dim s As Long For n=1 To 1000 s=1 For i=2 To n-1 If n Mod i=0 Then s=s+i Next i If s=n Then Text1=Text1&n&If k Mod 5=0 Then Text1=Text1&vbCrLf End If Next n End Sub Private Sub Command2_Click()End End Sub 2.百元买百鸡Priv

2、ate Sub Command1_Click()Dim i As Integer Dim j As Integer For i=0 To 20 For j=0 To 33 If 5*i+3*j+(100-i-j)*1/3=100 Then Text1=Text1&买&CStr(i)&只公鸡&CStr(j)&只母鸡&CStr(100-i-j)&只小鸡 Text1=Text1&Chr(13)&Chr(10)End If Next j Next i End Sub Private Sub Command2_Click()End End Sub 3.不靠边元素和Private Sub Command1

3、_Click()Cls Randomize Dim a(5,5)As Integer,s%For i=0 To 5 For j=0 To 5 a(i,j)=Int(Rnd*9)Print a(i,j)&,;Sum=Sum+a(i,j)Next j Print Next i k=Sum Sum=0 For i=0 To 5 Sum=Sum+a(i,0)+a(i,5)+a(0,i)+a(5,i)Next i Sum=Sum-a(0,0)-a(5,0)-a(5,5)-a(0,5)Text1=k-Sum End Sub Private Sub Command2_Click()End End Sub 4

4、.递归函数求斐波拉契数列Option Explicit Private Sub Command1_Click()Dim a1,a2,b As Integer Dim i,n As Integer n=InputBox(显示数列的前N 项)a1=1 For i=1 To n b=a1+a2 Text1.SelText=b&a1=a2 a2=b Next i End Sub Private Sub Command2_Click()End End Sub 5.各位数之和Private Sub Command1_Click()Dim i As String Dim j%Dim s%i=Text1 Fo

5、r j=1 To Len(i)st=Mid(i,j,1)s=s+Val(st)Next j Text2=s End Sub Private Sub Command2_Click()End End Sub 6.回文数Private Sub Command1_Click()Dim x$,y$,c$,i%x=Text1 For i=1 To Len(x)c=Mid(x,i,1)y=c+y Next i If y=x Then Text2=x 是回文数 Else Text2=x 不是回文数 End If End Sub Private Sub Command2_Click()Text1=Text2=E

6、nd Sub Private Sub Command3_Click()End End Sub 7.级数求和Private Sub Command1_Click()Dim i As Integer,t As Long,s As Single i=0:s=o:t=1 Do s=s+1/t i=i+1 t=t*i Loop Until 1/t 0.000001 Text1=s End Sub Private Sub Command2_Click()End End Sub 8.矩阵的转置Option Explicit Option Base 1 Dim i As Integer Dim j As In

7、teger Dim a()As Integer Dim n As Integer Private Sub Command1_Click()Text3.SetFocus n=Val(Text3)ReDim a(n,n)动态数组For i=1 To n For j=1 To n a(i,j)=Int(10*Rnd+0)随机数Text1=Text1&a(i,j)&一行Next j Text1=Text1&Chr(13)&Chr(10)多行Next i End Sub Private Sub Command2_Click()Dim b()As Integer n=Val(Text3)ReDim b(n

8、,n)For i=1 To n For j=1 To n b(i,j)=a(j,i)转置Text2=Text2&b(i,j)&一行Next j Text2=Text2&Chr(13)&Chr(10)多行Next i End Sub Private Sub Command3_Click()Text1=Text2=Text3=清除Text3.SetFocus End Sub Private Sub Command4_Click()End 结束End Sub Private Sub Form_Load()Text1=Text2=Text3=清除End Sub 9.靠边元素和Private Sub C

9、ommand1_Click()Cls Randomize Dim a(5,5)As Integer For i=0 To 5 For j=0 To 5 a(i,j)=Int(Rnd*9)Print a(i,j)&,;Sum=Sum+a(i,j)Next j Print Next i Sum=0 For i=0 To 5 Sum=Sum+a(i,0)+a(i,5)+a(0,i)+a(5,i)Next Sum=Sum-a(0,0)-a(5,0)-a(5,5)-a(0,5)Text1=Sum End Sub Private Sub Command2_Click()End End Sub 10.冒泡排

10、序Option Explicit Option Base 1 Dim a(10)As Integer Dim i As Integer Private Sub Command1_Click()For i=1 To 10 a(i)=Int(90*Rnd+10)Text1=Text1&Str(a(i)&If i Mod 5=0 Then Text1=Text1&Chr(13)&Chr(10)Next i End Sub Private Sub Command2_Click()Dim j As Integer Dim t As Integer For i=1 To 9 For j=1 To 10-i

11、 If a(j)a(j+1)Then t=a(j)a(j)=a(j+1)a(j+1)=t End If Next j Next i For i=1 To 10 Text2=Text2&Str(a(i)&If i Mod 5=0 Then Text2=Text2&Chr(13)&Chr(10)Next i End Sub Private Sub Command3_Click()Text1=Text2=End Sub Private Sub Command4_Click()End End Sub 11.逆序数Private Sub Command1_Click()Dim a As String D

12、im i%Dim s As String a=Text1 For i=1 To Len(a)st=Mid(a,i,1)s=st+s Next i Text2=s End Sub Private Sub Command2_Click()End End Sub 12.判断素数Private Sub Command1_Click()Dim n As Integer Dim i As Integer n=Val(Text1)If n=1 Then MsgBox(CStr(n)&是素数)Else For i=2 To n-1 If n Mod i=0 Then Exit For Next i If i=

13、n Then MsgBox(CStr(n)&是素数)Else MsgBox(CStr(n)&不是素数)End If End If End Sub Private Sub Command2_Click()Text1=End Sub Private Sub Command3_Click()End End Sub 13.求阶乘（递归）Private Function f(ByVal n As Long)As Long Dim i As Integer f=1 If n=0 Or n=1 Then f=1 Else For i=1 To n f=f*i Next i End If End Functi

14、on Private Sub Command1_Click()Dim n As Long n=Val(Text1)Text2=f(n)End Sub Private Sub Command2_Click()Text1=Text2=End Sub Private Sub Command3_Click()End End Sub 14.求质因子Private Sub Command1_Click()Dim n%,i%,m%n=Val(Text1)For i=1 To n If i=1 Then Picture1.Print Else If n Mod i=0 Then For m=2 To i-1

15、If i Mod m=0 Then Exit For Next m If m=i Then Picture1.Print i,End If Picture1.Print End If End If Next i End Sub Private Sub Command2_Click()Text1=Picture1.Cls End Sub Private Sub Command3_Click()End End Sub 15.水仙花数Private Sub Command1_Click()Dim a,b,c As Integer For a=0 To 9 For b=0 To 9 For c=1 T

16、o 9 If a 3+b 3+c 3=a+10*b+100*c Then MsgBox 100*c+10*b+a End If Next c Next b Next a End Sub Private Sub Command2_Click()End End Sub 16.顺序查找Option Explicit Option Base 1 Dim a(10)As Integer Dim i As Integer Private Sub Command1_Click()For i=1 To 10 a(i)=Int(90*Rnd+10)Text1=Text1&Str(a(i)If i Mod 5=0

17、 Then Text1=Text1&Chr(13)&Chr(10)Next i End Sub Private Sub Command2_Click()Dim x As Integer x=Val(Text2)For i=1 To 10 If a(i)=x Then Exit For Next i If i k Then k=a(i)Next i Text2=k l=a(1)For i=2 To 10 If a(i)=a And m=z Then n=n+1 End If Next i Text2=n End Sub Private Sub Command2_Click()End End Su

18、b 19.最大公约数Private Sub Command1_Click()Dim m As Integer Dim n As Integer Dim k As Integer m=Val(Text1)n=Val(Text2)Do k=m Mod n m=n n=k Loop Until k=0 Text3=CStr(m)End Sub Private Sub Command2_Click()Text1=Text2=Text3=End Sub Private Sub Command3_Click()End End Sub 20.最小公倍数Option Explicit Private Sub Command1_Click()Dim m%,n%,k%Dim m1%,n1%Dim s%m=Val(Text1):n=Val(Text2)m1=m:n1=n Do k=m Mod n m=n n=k Loop Until k=0 s=m1*n1/m Text3=s End Sub Private Sub Command2_Click()Text1=Text2=Text3=End Sub Private Sub Command3_Click()End End Sub