View Code of Problem 74

#include<bits/stdc++.h>
using namespace std;
int main(){
	double n;
	scanf("%lf", &n);
	double a, b;
	double c;
	a = n / 2.0;
	b = 0.5 * (a + n / a);
	while (abs(a-b)>=0.00001)
	{
		a = b;
		b= 0.5 * (a + n / a);
	}
	printf("%.3lf\n", b);
	return 0;
}