[C#] 다형성예제

using System;
using System.Collections;
 
//Employee 클래스
abstract class Employee
{
    private String name;
    public Employee(String name)
    {
        this.name = name;
    }
    public String GetName()
    {
        return this.name;
    }
    public abstract int GetPay();
}
 
//Permanent 클래스
class Permanent : Employee
{
    private int salary;
    public Permanent(String name, int salary) : base(name)
    {
        this.salary = salary;
    }
    public override int GetPay()
    {
        return this.salary;
    }
}
 
//PartTime 클래스
class PartTime : Employee
{
    private int time;
    private int pay;
    public PartTime(String name, int time, int pay) : base(name)
    {
        this.time = time;
        this.pay = pay;
    }
    public override int GetPay()
    {
        return this.time * this.pay;
    }
}
 
//Department 클래스
class Department
{
    private ArrayList arList = new ArrayList();
    public void AddEmployee(Employee p)
    {
        this.arList.Add(p);
    }
    public void ShowEmployee()
    {
        foreach (Employee p in arList)
        {
            Console.WriteLine(p.GetName() + ":" + p.GetPay());
        }
    }
}
 
//프로그램 실행
class PolymorphismMain
{
    public static void Main()
    {
        Department depart = new Department();
        depart.AddEmployee(new Permanent("KIM", 1000));
        depart.AddEmployee(new Permanent("LEE", 1500));
        depart.AddEmployee(new PartTime("PARK", 10, 200));
        depart.AddEmployee(new PartTime("SONG", 10, 170));
        depart.ShowEmployee();
    }
}
/***
KIM:1000
LEE:1500
PARK:2000
SONG:1700
***/