员工管理系统C编码，包括进入系统，输入员工信息，查询员工信息，显示员工信息，修改员工信息，删除员工信息，统计员工信息，重设系统密码，退出系统。-The staff management system C code, including through the system, input staff information, inquires the employee information, show staff information, revising their information,