：此程序是一个简单的模拟电梯升降的系统。在现实中，电梯系统要由乘客和电梯相互作用而形成的一个灵活的系统，电梯升降需要人的指令，而人也可以在等待时间过长而离开。虽然他们的行为可能受对方的作用，但是他们的行为是基本独立的。所以在这个程序模拟中，我将其分成几个抽象数据类型，并且做好每一部份的相互联系。在程序运行中输入乘客所进入的楼层，将要去的楼层，等待最长时间等数据可以完成其模拟。而这个系统可以很好的模拟现实中的电梯运行的状态。-This program is a simple simulation of lift off and landing system. In reality, the elevator system, passengers and the elevator up to the formation of interaction

A flexible system, the elevator movements need human instruction, but who can also be left waiting too long. Although their behavior

May be affected by each other s role, but their behavior is largely independent. Therefore, in this process simulation, I will be divided into several abstract

Data types, and to make every part of each other. Enter the program runs into the passenger floor, going to the floor,

Data such as waiting for the longest time to complete the simulation. And this system can simulate the real good run in the state of the elevator.