public virtual void display(){
Console.WriteLine("first name and last name :{0}",fn+ " " +ln);
public class parttimeempplyoee:emplyoee{
public override void display(){
Console.WriteLine("first name and last name :{0}",fn+ " " +ln+ " "+"-part-time");
public class fulltimeempplyoee:emplyoee{
public override void display(){
Console.WriteLine("first name and last name :{0}",fn+ " " +ln+ " "+"-full-time");
public class temprorytimeempplyoee:emplyoee{
public override void display(){
Console.WriteLine("first name and last name :{0}",fn+ " " +ln+ " "+"-temprory-time");
public static void Main(string[] args){
emplyoee[] e = new emplyoee[4];
e[1]=new parttimeempplyoee();
e[2]=new fulltimeempplyoee();
e[3]=new temprorytimeempplyoee();
foreach(emplyoee emp in e){