static void Main(string[] args) { PhoneBook p1 = new PhoneBook(); p1.AddContacts("Roy", "053-721-6094"); p1.AddContacts("Guy", "696-696-6969"); p1.AddContacts("Koma", "420-420-4200"); Console.WriteLine(p1); p1.AddContacts("AdirKoma", "123-456-7888"); Console.WriteLine(p1); p1.DelContact("Guy"); Console.WriteLine(p1); }