Program To Print Fibonacci Numbers Below 100 In C#

using System;
class myclass
{
    static void Main() {
        int fn = 0;
        int sn = 1;
        int tn = 1;
        Console.WriteLine(fn);
        Console.WriteLine(sn);
        while (true) {
            tn = fn + sn;
            if (tn >= 100) {
                break;
            }
            Console.WriteLine(tn);
            fn = sn;
            sn = tn;
        }
        Console.Read();
    }
}