static void Main() { Student peter = new Student("Peter", "Ivanov", new DateTime(1992, 03, 17)); Student stella = new Student("Stella", "Markova", new DateTime(1993, 11, 03)); Console.WriteLine(peter); Console.WriteLine(stella); Console.WriteLine("{0} is older than {1} -> {2}", peter.FullName, stella.FullName, peter.CompareStudentsBirthDates(stella)); Console.WriteLine("{0} is older than {1} -> {2}", stella.FullName, peter.FullName, stella.CompareStudentsBirthDates(peter)); }