string splitting

{ Multi-posted article. -mod }

I have a string like below:
16:23:18.659343 131.188.37.230.22 131.188.37.59.1398 tcp 168

for example lets say for the above string has
16:23:18.659343 -- time
131.188.37.230   -- srcaddress
22                        --srcport
131.188.37.59    --destaddress
1398                  --destport
  tcp                    --protocol
168                  --size

i need to split the above string such that i need to get all these
parameters.... the field widths are not fixed..i have some times four/
three digits
srcport ..so i cant do it with substr function...i need this in c++
i am not getting an idea how to split it..
thank you for any help

-- 
      [ See http://www.gotw.ca/resources/clcm.htm
for info about ]
      [ comp.lang.c++.moderated.    First time posters: Do this! ]