机动车类 包括机动车的属性 和机动车的方法 挺简单的一个程序,实现了继承 多态,适合初学者参考-The class of the vehicle including a very simple procedure of the properties of the motor vehicle and motor vehicle inherited polymorphic reference for beginners

VC++一个非常实用多态的小例子，提供大家熟悉C语言多态特性的使用。-VC++ A very practical example of polymorphic small to provide everyone familiar with the C language the use of multi-modal characteristics.

此代码为单片机通过定时器控制数码管多态显示,仅供初学者参考-The code for the MCU through the timer control polymorphic digital tube display, only for beginners reference