[c++]New to cpp, Need to get IP

[blazes]

How would I go about getting the IP address of the machine running the program with c++? As I said i'm new and only know the basics.

[BradLee]

Well, a computer pretty much always has more than one local IP address (127.0.0.1, etc..)

If you are on a Windows machine you can use winsock to get a list of your local IP addresses.

Look here: http://tangentsoft.net/wskfaq/examples/ipaddr.html

Linux has something similar, I just don't remember what it is at the moment.

[λ]

That code will work on Linux too, if you remove all the winsock crap.. Winsock is basically just BSD sockets with a few extra function calls required before and after use :)

[blazes]

Trying that code, I just get a bunch of 'unidentified' functions and variables, but I can't find out what the problem is.


[Linker error] undefined reference to `WSAStartup@8'
[Linker error] undefined reference to `WSAGetLastError@0'
[Linker error] undefined reference to `gethostname@8'
[Linker error] undefined reference to `gethostbyname@4'
[Linker error] undefined reference to `inet_ntoa@4'
[Linker error] undefined reference to `WSACleanup@0'

[BradLee]

The problem is you are missing the winsock libraries. You can either include these through settings or to be simpler just include it through a compiler directive like this:

For winsock -
#pragma comment(lib,"ws_32.lib")

For winsock2 -
#pragma comment(lib,"ws2_32.lib")