定义eps的时候用都double不用int

代码

#include<iostream>
#include<cstdio>
#include <cstring>
#include <algorithm>
using namespace std;

const double eps =1e-8;
int main()
{
    double n;
    cin>>n;
    double l=-1e6,r=1e6;
    while(r-l>eps)
    {
        double mid=(l+r)/2;
        if(mid*mid*mid<n)l=mid;
        else r=mid;
    }
    printf("%.6lf",l);
    return 0;
}