View Code of Problem 74

#include<iostream>
#include<cstdio>
#include<math.h>

int main()
{
	double x;
	double x1 = 1.0, x2;
	scanf("%lf", &x);
	x2 = 0.5 * (x1 + x / x1);
	while(fabs(x1-x2) >= 0.00001)
	{
		x1 = x2;
		x2 = 0.5 * (x1 + x / x1);
	}
	printf("%.3lf", x2);
	return 0;
}