计算任意数字的平方根
import java.util.*;
import java.math.*;
public class Main{
public static double sqrt(double c) {
if(c<0)
return Double.NaN;
double err=1e-15;
double t=c;
while(Math.abs(t-c/t)>err*t) {
t=(c/t+t)/2.0;
}
return t;
}
public static void main(String[] args) {
Scanner cin=new Scanner(System.in);
int T=cin.nextInt();
int ca=1;
while((T--)!=0) {
double x=cin.nextDouble();
System.out.println(sqrt(x));
System.out.println(Math.sqrt(x));
}
cin.close();
}
}