public static void Main()
Console.WriteLine("Hello World");test();
static private void test()
for (int i = 0; i <= 0xffff; ++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));