c++ primer 第五版Sales_items.h范例（带大量注释）

/**Thisfilecontainscodefrom"C++Primer,FifthEdition",byStanleyB.*Lippman,JoseeLajoie,andBarbaraE.Moo,andiscoveredunderthe*copyrightandwarrantynoticesgiveninthatbook:**"Copyright(c)2013byObjectwrite,Inc.,JoseeLajoie,andBarbaraE.Moo."***"Theauthor