Order of punctuation marks vs letters

Question

In C#, it is well known that \".\".CompareTo(\"A\") == -1 .

My question is: is there a punctuation mark x such that x.CompareTo(\"A\") == 1

Answer 1

Characters in C# are UTF-16 (16-bit characters).

The following ASCII (i.e. found on a standard US keyboard) non-letter characters come after A:

[ \ ] ^ _ `

The following come after A as well as after lower-case a:

~ { | }

There are also a number of other special characters above the ASCII range

See

http://www.fileformat.info/info/charset/UTF-16/list.htm

http://en.wikipedia.org/wiki/UTF-16

http://msdn.microsoft.com/en-us/library/dd374081.aspx