using System;
using System.Collections.Generic;
using System.Text;
class Tire {
public static readonly Tire GoodStone = new Tire(90);
public static readonly Tire FireYear = new Tire(100);
public int manufactureID;
public Tire() { }
public Tire(int ID) { manufactureID = ID; }
}
class Employee {
public readonly string SSN;
public Employee(string empSSN) {
SSN = empSSN;
}
}
class Program {
static void Main(string[] args) {
Tire myTire = Tire.FireYear;
Console.WriteLine("ID of my tire is: {0}", myTire.manufactureID);
Employee e = new Employee("111-22-1111");
// e.SSN = "222-22-2222"; // error!
}
}
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