用vb编程求π的公式为 π 2=2*2 1*3

1、循环前面加一条：pi=02、i=-1改为i=-1*i

PrivateSubCommand1_Click()Dimn,jc,sumn=25jc=1sum=1Fori=1Tonjc=jc*isum=sum+1/jcNextisum=Format(sum,"0

n=val(inputbox"请输入一个数字.")fori=1tona=a+inextiprinta

#include#includemain(void){intn,i;printf("请输入n的值\n");scanf("%d",&n);intsum1=1,sum2=2,sum;for(i=3;i

PrivateSubForm_Click()DimnAsIntegern=Val(InputBox("请输入N:"))Dima,bAsLonga=1:b=1Fori=1TonPrinta&""&b&"

简单就是不会再问：....再答：不是不会是好久没做了差不多都忘了呵呵

for循环修改下fori=1to2n-1step2a=a+inexti

PrivateSubForm_Click()DimHeAsLongDimIAsInteger,MAsInteger,NAsIntegerM=Int(Val(InputBox("M的值","输入",3)

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

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

DimaAsDoubleDimsAsDoubleDimeAsSingleDimtAsSinglea=1s=1e=1DoWhile1/s>=10^(-0.4)s=s*at=1/se=e+ta=a+1Lo

DimminAsDouble,maxAsDoubleDimtmpAsDoublemin=1max=1.5tmp=0DoWhileTruetmp=((max+min)/2)^3-(max+min)/2-

代码如下:OptionExplicitPrivateSubCommand1_Click()MsgBoxP(2,2)EndSubFunctionP(ByValnAsInteger,ByValxAsDou

DimSAsDouble,IAsInteger,TAsIntegerT=1ForI=1To100S=S+T*1/(2*I-1)T=-TNextMsgBoxS*4你的问题应该还有一个条件,就是计算到什么

……t=1s=0Fori=1To10t=t*is=s+tNexti再问：这个要用什么下拉列表呢？再答：Textbox代码是在Botton中完成！

mModn=rr=mModn

wkihh,.>=-===236544458kjim=+3.14-------------:[325544]

functionjiecheng(iasinteger)asdoubleforj=1toijiecheng*=inextendfunctiondime=0dimi=0doe+=1/jiecheng(i

DimNAsLongDimiAsLongN=Val(InputBox("请输入数字","输入数字"))Fori=1ToNs=s+i^2NextMsgBoxs再问：请输入数字填写什么啊。。小白不懂求大神

PrivateSubCommand1_Click()DimnAsInteger,iAsIntegerDimxAsVariant,sumAsDoublen=20x=CDec(x)x=1Fori=1Ton