vb用递归的方法求出fibonacci数列的第20项

添加一个文本框输入前N项的N值,再添加一个命令按钮即可PrivateFunctionF(NAsLong)AsLongIfN>2ThenF=F(N-1)+F(N-2)ElseF=1EndIfEndFun

dimf()asdoublen=inputbox("in","NO.")redimf(n)asdoublef(1)=1f(2)=1fori=3tonf(i)=f(i-1)+f(i-2)nextprin

#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

PrivateSubCommand1_Click()n=InputBox("请输入阶数n：")s=f(n)Printn&"!="&sEndSubPrivateFunctionf(ByValnAsInt

PrivateSubForm_click()p1=1p2=1p3=p1i=1DoWhileAbs(p3)>0.0000001'p3要取绝对值p2=(-1)*p2p3=p2/(i+1)p1=p1+p3'

然后是用递归逆转输出数字的.programReverseNum;varnum:integer;procedurefun(n:integer);beginifn1thenbeginwrite(nmod1

PrivateFunctionF(nAsLong)AsLongIfn>2ThenF=F(n-1)+F(n-2)ElseF=1EndIfEndFunctionPrivateSubCommand1_Cli

PrivateSubForm_load()DimiAsLong,nasintegern=int(val(inputbox("输入Fibonacci数列的项数")))Fori=1TonPrintFibo

public static int fibonacci(int n) {  if (n <= 

说个递归的方法吧;intf(intn){//递归出口；//递归替;}递归出口一般为1或0：如：if(n==1||n==0)return1;//递归出口;elsef(n-1);//递归体希望采纳

varn:integer;functionfac(n:integer):longint;beginifn

不用那么麻烦inta=1,b=2,i,k,n;floatsum=0.0;scanf("%d",&n);for(i=0;i再问：不是题目要用递归函数

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

longfac(int);这一步应该为longfac(int,float);y=fac(n);这一步应该为：y=fac(n,x);elseif(n=0)f=1;这一步应该为：elseif(n==0)f

#includelongfib(intn){inta;if(n==1)a=1;elseif(n==2)a=1;elsea=fib(n-1)+fib(n-2);returna;}voidmain(){\

#include#includefloatmyfunction(intn,intx){if(0==n){return1;}elseif(1==n){returnx;}else{return((2*n-

PrivateSubForm_Load()DimaAsInteger,bAsInteger,cAsInteger,MaxAsInteger,MinAsIntegera=InputBox("请输入a值"

什么语言再问：计算机程序设计有关的再问：编程题目再答：对啊，用什么语言编再问：再问：标准再问：判断下对错再答：我没学过数据库再问：十六进制数FO5D.7A用八进制怎么表示再答：170135.36#in

1.#include"stdio.h"//#defineRECURSION1#ifdefRECURSIONlongfact(intn){if(n

//fibonacci数列:11235813213455...#includedoublefib_val[100]={0};doublefibonacci_1(intn)//递归,计算时间长,n最好不