[Scottish] Any C people out there?

[Colin McKinnon]

Hi all,

I find myself writing in C again - its a bit of a shock to the system after so 
much PHP. I have come up against a problem to whit:

I need to list all the groups a particular user is a member of. I know of 
functions which will tell me who is in a prticular group, and functions which 
will go through each group (although this is likely to be a rather expensive 
way of solving problem - I'm not precluding it as a possibility, particularly 
if I can cut & paste someone else's code ;). Can anyone point me in the right 
direction? Know of any (GPL) program which does similar?

(BTW I need something which is uses the nss as it needs to be able to make 
sense of NIS and LDAP as well as files)

TIA,

Colin