vb计算s=1 (1 2) (1 2 3) n从键盘输入

PrivateSubCommand1_Click()DimsumAsDoubleDimiAsLongDimnAsDoublen=((1/(10^-5))+1)/2'正好等于10^-5时候n的值

数学计算可以简化过程：因为1-2=-1,3-4=-1...所以得出-1+(-1)+...,重复(100/2)次,即代码为(这是最简单而且最快速的办法)：DimsAsInteger=-(100/2)如果

PrivateSubCommand1_click()DimnAsIntegern=100Printf(n)EndSubFunctionf(n)Fori=1Tonf=f+1/iNextiEndFunct

dims,a,is=1a=1i=0DoWhilea

PrivateSubForm_Activate()a5EndSubSuba(nAsLong)DimiAsLongFori=1TonSum=Sum+1/f(i)NextiPrintSumEndSubFu

OptionExplicitPrivateSubCommand1_Click()DimsAsSingle,nAsLong,stAsStringn=1s=0DoDoEventss=s+nst=st&nI

看了上面几位的代码：应该都写错了楼主的问题是：s等于1到N之间每个整数的阶乘相加,而不是N的阶乘我没理解错吧?稍等完毕：在模块中输入代码：PublicFunctionfac(nAsInteger)As

一次都运行不起来,编译错误.next后面的变量必须和循环计数器相同也就是next或nexti都可以,nexts不行如果是nexti那么第一次,i=1,s=1步长为3,所以第一次执行到nexti,i=i

PrivateSubCommand1_Click()DimiAsDoubleDimnAsDoubleDimsumAsDoublesum=0IfNotIsNumeric(Text1.Text)Then'

PublicFunctions(n)Dimi,j,t,resFori=1Tont=1Forj=1Toit=t*jNextres=res+tNexts=resEndFunction

你好!PrivateSubForm_Click()DimiAsIntegerDimsAsIntegerFori=1To100s=s+iNextiPrintsEndSu

PrivateSubCommand1_Click()DimiAsLong,Si=0:S=0WhileSi=i+1S=S+i*(i+1)WendText1.Text=SText2.Text=iEndSu

PrivateSubCommand2_Click()DimIAsLong,SAsLongForI=1To100IfIMod2=0ThenS=S-IElseS=S+IEndIfNextPrintSEnd

PrivateSubCommand1_Click()Dimi,n,sAsIntegern=Val(Text1.Text)s=0Fori=nTo0Step-1s=s+i*(i+1)/2NextiText

PrivateSubCommand1_Click()Dimi,j,tDimsumsum=1Fori=2To10t=1Forj=1Toit=t*2Nextjsum=sum+tNextiPrintsumE

PrivateSubCommand1_Click()DimiAsInteger,jAsInteger,nAsIntegerDimsum1AsLong,sum2AsLongn=inputbox("请输入

mid从指定位置截取指定长度的容.mid(string,start,len)

PrivateSubCommand1_Click()DimsAsDoubleDimaAsLong,nAsLongn=1a=1s=s+1/aDoUntil1/aa=a+ns=s+1/an=n+1Loop

PrivateSubCommand1_Click()dimiasintegerfori=1to55step2m=m+inextiprintmendsu

PrivateSubCommand1_Click()DimmAsInteger,nAsInteger,s,result'm为分母变量,n为位置变量,s为数值变量,result为和的变量m=1:n=0: