using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");test();

    }

    static private void test()

{

    for (int i = 0; i <= 0xffff; ++i)

    {

        char c = (char) i;

​

        if (Char.IsDigit( c) != Char.IsNumber( c)) {

            Console.WriteLine( "Char value {0:x} IsDigit() = {1}, IsNumber() = {2}", i, Char.IsDigit( c), Char.IsNumber( c));

        }

    }

}

}