using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace lab5
{
    abstract class Zalozenia
    {
        Zalozenia(double e){
            error = e;
        }
        ~Zalozenia() {

        }
        protected double error;
        virtual public double sqrtNumber(double num){
            double temp = 0, temp2 = 0;
            if (this.error == 0)
            {
                if (num >= 0)
                {
                    temp = Math.Sqrt(num);
                }
                else
                {
                    temp = Math.Sqrt(-(num));
                }
            }
            else if (this.error > 0 && this.error <= 0.1)
            {
                if (num >= 0)
                {
                    temp = 1.0 * (num / 2);
                    temp2 = 1.0 * (num / temp);
                }
                else
                {
                    temp = 1.0 * (-(num) / 2);
                    temp2 = 1.0 * (-(num) / temp);
                }

                for (; ; )
                {
                    if (Math.Abs(temp - temp2) < this.error || Math.Pow(temp, 2) == num)
                    {
                        break;
                    }
                    else
                    {
                        temp = (1.0 * temp + temp2) / 2;
                        temp2 = (1.0 * num) / (1.0 * temp);
                    }
                }

            }
            else if (this.error > 0.1)
            {
                if (num >= 0)
                {
                    temp = 1.0 * (num / 2);
                    temp2 = 1.0 * (num / temp);
                }
                else
                {
                    temp = 1.0 * (-(num) / 2);
                    temp2 = 1.0 * (-(num) / temp);
                }

                for (; ; )
                {
                    if (Math.Abs(temp - temp2) < this.error || Math.Pow(temp, 2) == num)
                    {
                        break;
                    }
                    else
                    {
                        temp2 = temp;
                        temp = temp2 - ((Math.Pow(temp2, 2) - num) / (2 * temp2));
                    }
                }
            }
            return temp;

        }
        virtual public void wyswietl()
        {

        }
        virtual public void rozwiazRownanie()
        {

        }



    }
}