程序说明书 一． 各模块的功能： readtxt()，读读者文件writetxt()，写读者文件addreader(reader s) ，添加读者delreader(int number)，删除读者searchreader(int number)，查找读者readerdata() ，读者数据管理readbtxt()，读图书文件writebtxt()，写图书文件addbook(libook s)，添加图书delbook(int number)，删除图书searchbook(int number)，查找图书bookdata()，图书数据管理borbook()，读者借书retbook()，读者还书main()主函数-a procedure manuals. The module functions : readtxt (), read documents readers writetxt (), write documents addreader readers (reader s), add the readers delreader (int number), the deletion of readers searchreader (int number), you readers readerdata (), data management readbtxt readers ( ), reading books document writebtxt (), write books document addbook (libook s), add the books delbook (int number), the deletion of books searchbook (int number), search for books bookdata (), library data management borbook (), borrowers retbook ( ), readers book main () function main