static void Main(string[] args) { IManager manager = new Manager() { FirstName = "Silviu", LastName = "Olariu", }; manager.CalculatePerHourRate(2); Console.WriteLine($"Manager salary is:{manager.Salary} "); IEmployee employee = new Employee() { FirstName = "Mirel", LastName = "Radoi", Salary = 1000 }; employee.AssignManager(manager); Console.WriteLine($"Radoi's manager is: {employee.Manager.FirstName}"); ICEO cEO = new CEO(); cEO.FireSomeone(); }