View Code of Problem 74

#include<bits/stdc++.h>
using namespace std;
int main(){
	double a,x0=1,x1;
	cin>>a;
	x0=a/2;
	x1=(x0+a/x0)/2;
	while(fabs(x1-x0)>1e-5){
		x0=x1;
		x1=(x0+a/x0)/2;
	}
	printf("%.3f",x1);
	return 0;
}