line buffered input

[Doorsdown]

I am making a parser tool for a project i am doing. I need C/C++ to recieve line buffered input from tcpdump. I can not figure out how to recieve it properly.

Thank you.

[Phil^]

a quick google reveals http://www.google.co.uk/search?q=lin...-GB:unofficial
from the man pages, http://www.ethereal.com/docs/man-pages/tcpdump.8.html
You can use the -l switch to make stdout line buffered. From there i guess its simply a matter of piping it into your parser tool and working from stdin

[Doorsdown]

I knew that much, its more of how do i recieve it C?

[Phil^]

its been a long time since ive done any c++ , but doesnt cin handle input from stdin?
normally this is the keyboard but when data is piped to it, im not sure if stdin changes to this or not.

[djbass]

cin does, you can also use the standard file i/o routines to read data by specifying stdin as the file descriptor.

You would likely also need to pipe data from tcpdump to your program.

tcpdump -l | yourprog

Wikipedia entry on piping/redirecting stdio on Unix