说明：  C++基础知识的学习文档，通过编程实例进行教学说明以及C++知识的应用。程序简单易懂，对于新手的学习容易上手，易掌握C++的基础语法。
(C++ basics of learning document, by example for description of the application of knowledge. Easy to understand, easy to use for the novice.)