HDU 1012 u Calculate e

题解：直接模拟

#include <cstdio>

int main(){  

    puts("n e");puts("- -----------");puts("0 1");  

    double ans=1.0,f=1.0;  

    for(int i=1;i<=9;i++){

        if(i==1)printf("%d %.0lf\n",i,(ans+=(f/=(double)i)));

        else if(i==2)printf("%d %.1lf\n",i,(ans+=(f/=(double)i)));

        else printf("%d %.9lf\n",i,(ans+=(f/=(double)i)));  

    }return 0;  

}