File list (Check if you may need any files):
book the ticket
...............\book_purchase.c
...............\file_booking_message
...............\file_purchased_message
...............\file_train_message
...............\file_user_message
...............\guest_fun.c
...............\landing
...............\landing_system.c
...............\Makefile
...............\sur_fun.c
...............\train.h
...............\train_message_function.c
...............\user_message_function.c
...............\火车定票系统设计文档.doc