说明：  这是《C++程序设计》谭浩强编著的课件，由 清华大学出版，课件制作：南京理工大学 陈清华 朱红
(This is the " C++ program design" Hemopurification ed courseware, published by Tsinghua University, courseware production: Offered vermilion, Nanjing University of Science and Technology)