说明： 这是清华大学的C语言教学课件,很难得的.其中有五子棋的设计和其他的项目开发的说明过程，对初学者很有帮助.同时也可以了解到高手是怎么学习的. (This is the C language university courseware, it is difficult to get. There are 331 of them in the design and development of other projects of note process, useful for beginners. It could also learned how experts are learning.)
