how to sort IP addresses in routing table in C++?

[cutesue]

how to sort IP addresses in routing table in ascending order in C or C++? like if we've two same ip addreses, 128.0.0.0 with prefix length 2 and 128.0.0.0 with prefix length 4, the one with 2 precedes 4. pl help!

[Texan40]

If you are using Windows perhaps start here: http://msdn.microsoft.com/en-us/library/windows/desktop/aa365953(v=vs.85).aspx