632:/secure/mail_reader.c (/secure/mail_reader.c)
(static int) check_valid_msg_num(int msg_num)
/*
 * Function name: check_valid_msg_num
 * Description  : Check if the number is a valid message number, i.e. a
 *                number in the range of 1 to the number of messages.
 * Arguments    : msg_num: the number to check
 * Returns      : True if valid
 */
