parsing incoming data

[sunburnt]

Hullo. I'm writing a simple server which will parse messages and respond to them. Since I do not usually work with c++, I'm looking for a little help :)
My protocol is a simple one -- Command\rArgument\rArgument\n (or Command\n) but I'm having trouble parsing it. What I would like to do is set up a buffer which data is put into, and then complete commands are taken out/parsed and any leftover is returned to the buffer. Unfortunantly, I'm not too clear on how to do this :P
Here's what we're looking at:


char input[256];
memset(input,0x20, 255);
input[255] = '\0';

while( sckout != SOCKET_ERROR )
{
lenx = recv( sckout, input, sizeof(input), 0) ;
if (lenx > 0)
{
/* ehhhhh :-D */
}

}
}


any comments/code would be appreciated. Thanks.