图书功能，运用数组和结构体实现，可以实现对图书的日常维护和管理-Book features, the use of the array and the realization of the structure can be achieved on the books of the day-to-day maintenance and management

超级玛丽制作揭秘，码写成一个容易扩展、容易维护、功能全面的“框架”-Super Mario make revelation, code written a easy extension, easy maintenance, comprehensive functions of "framework"