此程序规定：



(1)在程序中输入城市名称时，需输入10个字母以内的字母串；输入列车或飞机编号时需输入一个整型数据；输入列车或飞机的费用时需输入一个实型数据；输入列车或飞机开始时间和到达时间时均需输入两个整型数据（以hh：mm的形式）；在选择功能时，应输入与所选功能对应的一个整型数据。



(2)程序的输出信息主要是：最快需要多少时间才能到达，或最少需要多少旅费才能到达，或最少需要多少次中转到达，并详细说明依次于何时乘坐哪一趟列车或哪一次班机到何地。



(3)程序的功能包括：提供对城市信息的编辑，提供列车时刻表和飞机航班表的编辑，提供三种最优决策：最快到达、最省钱到达、最少中转次数到达。

-This program sets:



(1) in the program input city names, need to input ten letters within a spell, Input train or plane Numbers to enter an integer data　Input train or plane costs must be entered a real type data　Input train or plane start time and arrival time when all need to input two integer data (with hh: mm form)　In selecting function, should input and selected function and the corresponding integer data.



(2) of the program s output information are mainly: how much time to reach the fastest, or at least need how many travel to reach, or how many times must be at least transfer arrival and detailed instructions on which in turn to when a train or which time flight to wherever you are.



(3) program features include: provide for urban letter ?