static void Main(string[] args) { Person Edward = new Person("Edward", "Snowden"); Edward.SetDateOfBirth(new DateTime(1982, 2, 14)); Edward.greeting(); Edward.ContactNumber = "74946565923"; Console.WriteLine($"My phone number is :{Edward.ContactNumber}."); Person Wallace = new Person(new DateTime(1952, 4, 29), "Wallace", "Breen"); Wallace.greeting(); Console.WriteLine($"Object of Person type count: {Person.Count}"); ExcelFile excelFile = new ExcelFile(); excelFile.CreatedOn = DateTime.Now; excelFile.FileName = "excel-file"; excelFile.GenerateReport(); WordFile wordFile = new WordFile(); wordFile.CreatedOn = DateTime.Now; wordFile.FileName = "word-file"; wordFile.Print(); Class1 test = new Class1(); Shape[] shapes = { new Circle(), new Rectangle(), new Triangle(), }; foreach (Shape shape in shapes) { shape.Draw(); } }