1 /* 2     PROBLEM:hdu 1012 3     AUTHER:Nicole Lam 4     MEMO:水题 5 */ 6 #include<iostream> 7 #include<iomanip> 8 using namespace std; 9 double a[10];10 int main()11 {12     cout<<"n e"<<endl;13     cout<<"- -----------"<<endl;14     a[0]=1;15     double temp=1.0;16     cout<<"0 1"<<endl;17     for (int i=1;i<=9;i++)18     {19         temp=temp*i;20         a[i]=a[i-1]+(double)1/temp;21         if (i==1) cout<<"1 2"<<endl;22         else if (i==2) cout<<"2 2.5"<<endl;23         else cout<<i<<" "<<fixed<<setprecision(9)<<a[i]<<endl;24     }25     return 0;26 }