LW4 sqrt

#include <iostream>
#include <cmath>
using namespace std;

int main()
{
	double x, precision;

	cout << "Enter X: ";
	cin >> x;

	if (x <= 0) {
		cout << "X must be positive and larger than 0. Can't continue. Farewell.\n\n";
		return 0;

	}
	else {
		cout << "Enter precision: ";
		cin >> precision;

		double low = 1;
		double high = x;
		double mid = 0;

		while (fabs(mid * mid - x) > precision) {
				mid = low + (high - low) / 2;
				if (mid * mid > x) {
					high = mid;
				}
				else {
					low = mid;
				}

			}

		cout << "Square root of " << x << " is: " << mid << endl << endl;

//check here		cout << "sqrt of " << x << " is: " << sqrt(x) << endl << endl;

		return 0;

	}

}