1.编写程序,计算并输出下面数列中前20项中偶数项的和.
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![1.编写程序,计算并输出下面数列中前20项中偶数项的和.](/uploads/image/f/47501-53-1.jpg?t=1.%E7%BC%96%E5%86%99%E7%A8%8B%E5%BA%8F%2C%E8%AE%A1%E7%AE%97%E5%B9%B6%E8%BE%93%E5%87%BA%E4%B8%8B%E9%9D%A2%E6%95%B0%E5%88%97%E4%B8%AD%E5%89%8D20%E9%A1%B9%E4%B8%AD%E5%81%B6%E6%95%B0%E9%A1%B9%E7%9A%84%E5%92%8C.)
importjava.util.Scanner;publicclassA{//下面的方法是对单个数求阶乘,并返回publicstaticintjieCheng(intn){intsum=1;for(i
#includeintmain(){intn,i,sum;scanf("%d",&n);sum=0;for(i=1;i
一楼的程序运行结果发生溢出,得出错误值-29775.应将sum数据类型定义为长整型.#includeintmain(){intn=3;longsum=0;while(n
voidmain(){intx,inty;printf("请输入X的值:");scanf("%d",&x);printf("\n");if(x
#include<stdio.h>int main(void){ int n,count = 0;&n
#includevoidmain(){inta,b;printf("pleaseinputtwonums:");scanf("%d%d",&a,&b);printf("%d%d\n",a/b,a%b)
declare@iint,@Jsumint,@Osumintset@i=1set@Jsum=0set@Osum=0while(@i
test{publicstaticvoidmain(Stringargs[]){longsum=0,a=1;longi=1;while(i=1)sum=sum+a;i++;a=a*i;}System.
#includeusingnamespacestd;#include/*编写程序,计算并输出下面数列前20项的和,结果取3位小数.(C++)2/1,3/2,4/3,5/4,6/5,7/6,8/7,……
#includevoidmain(){inti;doublesum=0;for(i=1;i
if(x%3==0)y=3;if(x%5==0)y=5;if(x%7==0)y=7;if(x%7==0&&x%5==0&&x%3==0)y=15;if(x%7==0&&x%5==0)y=12;if(x
我刚刚编的,可以.不知道是不是你所要的.#includevoidmain(){intn;printf("欢迎来到计算整数的三次方的程序!\n");printf("请输入您要计算的数:");scanf(
#include"stdio.h"voidmain(){doublea,n,s=0;for(n=1;n
#include"stdafx.h"voidmain(){ints=0;for(intn=1;n
PrivateSubCommand1_Click()a=InputBox("请输入数字","提示")b=InputBox("请输入数字","提示")Print"和:"&Val(a)+Val(b)Pri
importjava.util.*;publicclassNumberTest{publicstaticvoidmain(Stringarg[]){inta=5;intb=6;intc=2;intS=
longn=0;for(inti=1;i
1.dimi,jasIntegerfori=1to20j=j+i*(i+1)*(i+2)nextimsgboxj
#include"stdio.h"voidmain(){floatans=0;inti;for(i=1;i
PrivateSubForm_Click() DimnAsInteger,sAsInteger n=0 s=0