Splitting a string by space in C

char buffer[2048];
char *sp;

/* read packet into buffer here, omitted */

/* now find that space. */
sp = strchr(buffer, ' ');
if(sp != NULL)
{
  /* 0-terminate the first part, by replacing the space with a ''. */
  *sp++ = '';
  /* at this point we have the first part in 'buffer', the second at 'sp'.
}