#include <iostream>
#include <iomanip>
using namespace std;
class TongXiangJiSuan
{
public:
int n;
static int sum;
private:
int Account(void)
{
int i,j,temp;
for(i=1; i<=n; i++)
{
for(j=1, temp=1; j<=i; j++)
temp *= j;
sum += 1/temp;
}
return sum;
}
}
int main(void)
{
TongXiangJiSuan tx;
cin >> tx.n;
cout<<setiosflags(ios::fixed)<<setprecision(2)<<tx.Account()<<endl;
return 0;
}
追问![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/6f061d950a7b0208c6c352976fd9f2d3572cc8ba?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
有错误...但非常感谢您 我c++学的太吃力
追答恩。麻烦给采纳一下呗!