管理系统中需要实现的功能如下：

• 退出管理程序：退出当前管理系统
• 增加职工信息：实现批量添加职工功能，将信息录入到文件中，职工信息为：职工编号、姓名、部门编号
• 显示职工信息：显示公司内部所有职工的信息
• 删除离职职工：按照编号删除指定的职工
• 修改职工信息：按照编号修改职工的个人信息
• 查找职工信息：按照职工的编号或者职工的姓名进行查找相关的人员信息
• 按照编号排序：按照职工编号，进行排序，排序规则由用户指定
• 清空所有文档：清空文件中记录的所有职工信息（清空前需要再次确认、防止误删）

代码结构：

Main.cpp

#include <iostream>
#include "Manager.h"
using namespace std;int main()
{Manager manager;manager.init();while (true){std::cout << "************************************" << std::endl;std::cout << "职工管理系统" << std::endl;std::cout << "1：退出管理程序" << std::endl;std::cout << "2：添加职工信息" << std::endl;std::cout << "3：显示所有职工信息" << std::endl;std::cout << "4：删除离职员工" << std::endl;std::cout << "5：修改职工信息" << std::endl;std::cout << "6：查找职工信息" << std::endl;std::cout << "7：按照编号排序" << std::endl;std::cout << "8：清空所有文档" << std::endl;char select;std::cin >> select;switch (select){case '1': manager.exit(); break;case '2': manager.addStaff(); break;case '3': manager.showStaff(); break;case '4': {std::cout << "请选择要删除的用户编号" << std::endl;int num;std::cin >> num;manager.deleteStaff(num);break;}case '5': {std::cout << "请选择要更新的用户编号" << std::endl;int num;std::cin >> num;manager.updateStaff(num);break;}case '6': {std::cout << "请选择要查找的用户编号" << std::endl;int num;std::cin >> num;manager.findStaff(num);break;}case '7': {std::cout << "请选择排序方式： d:desc  a:asc" << std::endl;char sort;std::cin >> sort;manager.sort(sort=='d'); break;}case '8': manager.clear(); break;default:break;}}manager.StoreToFile();
}

Manager.h

#pragma once
#include <iostream>
#include <string>
#include "Staff.h"
#include <fstream>
using namespace std;#define FILE_NAME "STAFF.DAT"class Manager
{
private://职员数量int empNumber;//职员列表Staff** staff_array;
public:Manager(){this->empNumber = 0;this->staff_array = NULL;}~Manager(){std::cout << "系统Manager类析构函数调用" << std::endl;if (this->staff_array != NULL){delete[] this->staff_array;this->staff_array = NULL;}}//启动时初始化方法void init();//存储到磁盘void StoreToFile();//加载文件void LoadFile();//退出系统void exit();//增加职工void addStaff();//显示职工信息void showStaff();//删除离职员工void deleteStaff(int staffId);//修改职工信息void updateStaff(int staffId);//查找职工信息void findStaff(int staffId);//查找职工信息void findStaff(string staffName);//按照编号排序职工void sort(bool desc);//清空所有职工信息void clear();
};

staff.h

#pragma once
#include <iostream>
#include <string>
using namespace std;class Staff
{
private://职工编号int m_Id;//职工姓名string m_Name;
public:~Staff();
public:int getId();string getName();void setId(int id);void setName(string name);void printfInfo();//获取岗位职责virtual string getDuty();//获取岗位名称virtual string getJobName();
};class ManageJob : public Staff
{
public:ManageJob(int id, string name){this->setId(id);this->setName(name);}string getDuty();string getJobName();
};class BossJob : public Staff
{
public:BossJob(int id, string name){this->setId(id);this->setName(name);}string getDuty();string getJobName();
};class OrdinaryJob : public Staff
{
public:OrdinaryJob(int id, string name){this->setId(id);this->setName(name);}string getDuty();string getJobName();
};

Manager.cpp

#include "Manager.h"//启动时初始化方法
void Manager::init() 
{this->empNumber = 0;this->staff_array = NULL;this->LoadFile();
}
//退出系统
void Manager::exit()
{std::cout << "您确定退出系统吗？ y：退出系统 " << std::endl;char input;std::cin >> input;if (input == 'y' || input == 'Y'){std::exit(0);}return;
}
//将所有的职工信息保存到文件中
void Manager::StoreToFile()
{ofstream ofs;ofs.open(FILE_NAME, ios::out);for (int i = 0; i < this->empNumber; i++){ofs << this->staff_array[i]->getId() << "   "<< this->staff_array[i]->getName() << "   " << this->staff_array[i]->getJobName() << std::endl;}ofs.close();
}
//初始化加载文件
void Manager::LoadFile()
{ifstream ifs;ifs.open(FILE_NAME, ios::in);if (!ifs.is_open()) {cout << "文件不存在" << std::endl;ifs.close();return;}char ch;ifs >> ch;if (ifs.eof()){//文件为空cout << "文件为空" << std::endl;ifs.close();return;}int id;string name;string job_name;int index = 0;while (ifs >> id && ifs >> job_name && ifs >> name ){index++;}ifs.close();ifs.open(FILE_NAME, ios::in);this->empNumber = index+1;Staff** newSpace = new Staff * [this->empNumber];int ix = 0;while (ifs >> id  && ifs >> name && ifs >> job_name){Staff* staff = NULL;if (job_name == "总裁"){staff = new BossJob(id, name);}else if (job_name == "经理"){staff = new ManageJob(id, name);}else{staff = new OrdinaryJob(id, name);}newSpace[ix] = staff;ix++;}delete[] this->staff_array;this->staff_array = newSpace;
}
//增加职工
void Manager::addStaff()
{std::cout << "请输入您要添加的职员数量：" << std::endl;int addNum;std::cin >> addNum;if (addNum <= 0){return;}int new_size = this->empNumber + addNum;Staff** newSpace = new Staff * [new_size];//原有的数据放置到新的内存队列中if (this->staff_array != NULL){for (int i = 0; i < this->empNumber; i++){newSpace[i] = this->staff_array[i];}}//插入新数据for (int i = 0; i < addNum; i++){std::cout << "您正在添加第 " << i + 1 << " 个职员信息" << std::endl;std::cout << "请输入职员名称：";string name;std::cin >> name;std::cout << "请输入职员类型： 1.总裁 2.经理 3.员工";char input;std::cin >> input;Staff* staff = NULL;if (input == '1'){staff = new BossJob(this->empNumber + i + 1, name);}else if (input == '2'){staff = new ManageJob(this->empNumber + i + 1, name);}else if (input == '3'){staff = new OrdinaryJob(this->empNumber + i + 1, name);}else{std::cout << "您输入的选项不存在，本次添加跳过" << std::endl;continue;}//存储newSpace[this->empNumber + i] = staff;}delete[] this->staff_array;this->staff_array = newSpace;this->empNumber = new_size;std::cout << "成功添加 " << addNum << " 个员工信息" << std::endl;StoreToFile();
}
//显示职工信息
void Manager::showStaff()
{for (int i = 0; i < this->empNumber; i++){this->staff_array[i]->printfInfo();}
}
//删除离职员工
void Manager::deleteStaff(int staffId)
{int i = 0;for (; i < this->empNumber; i++){if (this->staff_array[i]->getId() == staffId){staff_array[i]->printfInfo();//删除，将所有的用户的后续编号前移//注意，这里的操作不符合实际情况，实际情况下id不允许更改for (int j = i; j < empNumber - 1; j++){staff_array[j] = staff_array[j+1];staff_array[j]->setId(staff_array[j]->getId() - 1);}this->empNumber = this->empNumber - 1;std::cout << "用户删除成功！" << std::endl;break;}}if (i >= this->empNumber){std::cout << "您要删除的用户不存在" << std::endl;}
}
//修改职工信息
void Manager::updateStaff(int staffId)
{int i = 0;for (; i < this->empNumber; i++){if (this->staff_array[i]->getId() == staffId){staff_array[i]->printfInfo();std::cout << "请输入您要修改的用户名称" << std::endl;string name;std::cin >> name;staff_array[i]->setName(name);}}if (i >= this->empNumber){std::cout << "您要修改的用户不存在" << std::endl;}
}
//查找职工信息
void Manager::findStaff(int staffId)
{int i = 0;for (; i < this->empNumber; i++){if (this->staff_array[i]->getId() == staffId){staff_array[i]->printfInfo();}}if (i > this->empNumber){std::cout << "您要查找的用户不存在" << std::endl;}
}
//查找职工信息
void Manager::findStaff(string staffName)
{int i = 0;for (; i < this->empNumber; i++){if (this->staff_array[i]->getName() == staffName){staff_array[i]->printfInfo();}}if (i > this->empNumber){std::cout << "您要查找的用户不存在" << std::endl;}
}
//按照编号排序职工
void Manager::sort(bool desc)
{if (desc){//根据id降序排列for (int i = this->empNumber-1; i >= 0; i--){this->staff_array[i]->printfInfo();}}else{//根据id升序排列this->showStaff();}
}
//清空所有职工信息
void Manager::clear()
{std::cout << "您确定要清除所有职工信息吗？？ y：确认操作 " << std::endl;char input;std::cin >> input;if (input == 'y' || input == 'Y'){this->empNumber = 0;delete[] this->staff_array;this->staff_array = NULL;}
}

Staff.cpp

#include <iostream>
#include <fstream>
#include <string>
#include "Staff.h"
using namespace std;Staff::~Staff()
{
}int Staff::getId()
{return this->m_Id;
}string Staff::getName()
{return this->m_Name;
}void Staff::setId(int id)
{this->m_Id = id;
}void Staff::setName(string name)
{this->m_Name = name;
}void Staff::printfInfo()
{std::cout << "职工编号：" << this->m_Id << "\t 职工姓名：" << this->m_Name << "\t 职工岗位："<< this->getJobName() << "\t 岗位职责：" << this->getDuty() << std::endl;
}//获取岗位职责
string Staff::getDuty() 
{return "";}//获取岗位名称
string Staff::getJobName() 
{return "";
}string ManageJob::getDuty()
{return "完成老板交给的任务，并下发任务给员工";
}string ManageJob::getJobName()
{return "经理";
}string BossJob::getDuty()
{return "管理公司所有事务";
}string BossJob::getJobName()
{return "总裁";
}string OrdinaryJob::getDuty()
{return "完成经理交给的任务";
}string OrdinaryJob::getJobName()
{return "员工";
}

项目运行效果图：