本程序是用来将客户选定图书放入购书车。使用户对图书的购买信息有详细的了解，暂时确定购书者的列表。这是本项目的关键，是实现购书的关键。是主程序的子程序。程序采用顺序处理。非常驻内存。无覆盖要求。可重人-this program is to be used for customer selected books Add car buyers. Allows users to purchase books have detailed information to understand, temporarily set Buyers lists. This is the key to the project is the key to achieving the buyers. The main program is a subprogram. Adoption of the order processing. Non-resident memory. Without coverage requirements. Can committees