Dealing with multiple interfaces?

After discussions about how to find out local IP addresses Martti Kylmälä (thank you) pointed out following web page:
http://www.hungry.com/~alves/local-ip-in-C.html. The page has example codes, discussion about portability and depency on DNS.

Lets add also a link to big endian and little endian discussion:
http://www.netrino.com/Publications/Glossary/Endianness.html