C++_2

http://blog.csdn.net/nette/article/details/4271070

http://blog.csdn.net/spiritring/article/details/22942839

http://wenku.baidu.com/link?url=41ZBTkuPqKvlIsWKouw0YPTy1E_3ahhwBYfSl8lsh4Mc8jCi0noXn1-htf7h-bn3VluUbbKAw5SgBhse7RbJVbCf-aQhUH2PG5P0yZ9r4XC