Employee[] employees =
(Employee[])salespeople.Clone();

foreach (Employee person in
employees) {
person.Pay();
}
}
}

public class Employee {
public Employee(string name) {
m_Name = name;
}

public virtual void Pay() {
Console.WriteLine("Paying {0}", m_Name);
}

private string m_Name;
}

public class CommissionedEmployee : Employee {
public CommissionedEmployee(string name) :
base(name) {
}

public override void Pay() {
base.Pay();
Console.WriteLine("Paying commissions");