public static void Main()
{
admin a = new admin();
Salesmgr s = new Salesmgr();
Programmer p = new Programmer();
Console.WriteLine("enter the info of admin");
a.accept();
Console.WriteLine("enter the info of salesmgr");
s.accept();
Console.WriteLine("enter the info of programmer");
p.accept();
Console.WriteLine("----- the info of admin---------");
a.display();
Console.WriteLine("--------the info of salesmgr-----------");
s.display();
Console.WriteLine("----------the info of progrmr---------");
p.display();
Console.ReadLine();
}
