公司有n个员工，编号1 ~ n。员工数量众多，需要你为他们编写一个管理系统。员工上班时都要登录管理系统登记一个code，离开要从管理系统上注销，员工也可以随时更新自己的code。到了下班时间，所有员工都会自动注销。公司管理人员随时都可能想要知道有多少员工上班，以及任一员工登记的code。
资源文件列表
Company/company.docx , 14740
Company/Company.sdf , 7077888
Company/Company.sln , 888
Company/Company.txt , 746
Company/Company.v11.suo , 20992
Company/Company/Company.cpp , 1126
Company/Company/Company.vcxproj , 4010
Company/Company/Company.vcxproj.filters , 945
Company/Company/Debug/cl.command.1.tlog , 606
Company/Company/Debug/CL.read.1.tlog , 7334
Company/Company/Debug/CL.write.1.tlog , 324
Company/Company/Debug/Company.lastbuildstate , 68
Company/Company/Debug/Company.log , 3034
Company/Company/Debug/Company.obj , 144611
Company/Company/Debug/link-cvtres.read.1.tlog , 2
Company/Company/Debug/link-cvtres.write.1.tlog , 2
Company/Company/Debug/link-rc.read.1.tlog , 2
Company/Company/Debug/link-rc.write.1.tlog , 2
Company/Company/Debug/link.6272-cvtres.read.1.tlog , 2
Company/Company/Debug/link.6272-cvtres.write.1.tlog , 2
Company/Company/Debug/link.6272-rc.read.1.tlog , 2
Company/Company/Debug/link.6272-rc.write.1.tlog , 2
Company/Company/Debug/link.6272.read.1.tlog , 2
Company/Company/Debug/link.6272.write.1.tlog , 2
Company/Company/Debug/link.command.1.tlog , 1102
Company/Company/Debug/link.read.1.tlog , 2302
Company/Company/Debug/link.write.1.tlog , 404
Company/Company/Debug/vc110.idb , 248832
Company/Company/Debug/vc110.pdb , 331776
Company/Debug/01.in , 30
Company/Debug/01.out , 3
Company/Debug/02.in , 47
Company/Debug/02.out , 3
Company/Debug/1645.out , 1
Company/Debug/1646.out , 1
Company/Debug/Company.exe , 64512
Company/Debug/Company.ilk , 429416
Company/Debug/Company.pdb , 830464