s=1+(1+2)+(1+2+3)+...+(1+2+3+...+n)

来源：百度知道 编辑：UC知道 时间：2024/06/17 05:06:05
c++,用for语言编写,谢谢大虾们

#include<conio.h>
#include<stdio.h>

void main()
{
int i=0,n=0,count=0,total=0;

printf("please input n: ");
scanf("%d",&n);

for(i=1;i<=n;i++)
{
count += i;
total += count;
}

printf("result is: %d",total);

getch();
}

SUM=0
N=val(inputBox("input"))
FOR I= 1 TO N
S=0
FOR J= 1 TO I
S=S+J
NEXT J
SUM = SUM+S
NEXT I
PRINT SUM