//=
 string path = @"../kwadraty.txt";
            Console.WriteLine("a");
            int a = Convert.ToInt32(Console.ReadLine());
            Console.WriteLine("b");
            int b = Convert.ToInt32(Console.ReadLine());
            StreamWriter sw = new StreamWriter(path);
            for (int i = a; i <= b; i++)
                sw.WriteLine(string.Format("{0};{1}", i, i * i));
            sw.Close();
            string linia;
            string[] wartosci;
            StreamReader sr = new StreamReader(path);
            while ((linia = sr.ReadLine()) != null)
            {
                wartosci = linia.Split(';');
                Console.WriteLine("Kwadrat {0} wynosi {1}", wartosci[0], wartosci[1]);
            }
            sr.Close();