C++ Project: Using Polymorphism to Realize Staff Management System

table of Contents

analysis

Overall project structure:

Partial running screenshot

Code

---

analysis

First look at the files of this project:

Mainly divided into two parts:

1. The main part:
   main.cpp and workManager.h, workManager.cpp
2. The employee part (written here in a polymorphic way):
   mainly
   three positions: worker.h and worker.cpp : boss, employee, manager

After analysis, do you know the meaning of each part?

It seems that there are a lot of them, but it is this kind of multiple files that makes the code more concise.

Therefore, you must first consider the overall structure before writing the project .

Overall project structure:

The difficulty of this project is not great, mainly to learn how the overall structure of the project is arranged.

On the left is the main part.

Mainly the function of the whole project, all the functions of the main interface are realized through the code and the different people on the right.

Contains the above functions, and some have not been written

On the right is the information of the three types of employees.

Everyone has their own name, number, position, and then contains two functions to display personal information and obtain position information.

Mainly stored through an array

There is nothing else that needs to be introduced too much, mainly to understand the overall architecture diagram above, the detailed code writing is not too complicated

Partial running screenshot

Code

main.cpp

#include "workManager.h"

//构造函数
WorkerManage::WorkerManage()
{
	ifstream ifs;
	ifs.open(FILENAME, ios::in); //读文件

	//1，文件不存在
	if (!ifs.is_open())
	{
		cout << "文件不存在" << endl;

		//初始化属性
		//初始化记录人数
		this->m_EmpNum = 0;
		//初始化数组指针
		this->m_EmpArray = NULL;
		//初始化文件是否为空
		this->m_FileIsEmpty = true;
		ifs.close();
		return;
	}

	//2，文件存在，数据为空
	char ch;
	ifs >> ch;
	if (ifs.eof())
	{
		//文件为空
		cout << "文件为空!" << endl;
		//初始化属性
		//初始化记录人数
		this->m_EmpNum = 0;
		//初始化数组指针
		this->m_EmpArray = NULL;
		//初始化文件是否为空
		this->m_FileIsEmpty = true;
		ifs.close();
		return;
	}

	//3，文件存在，并且记录数据
	int num = this->get_EmpNum();
	//cout << "职工人数为：" << num << endl;
	this->m_EmpNum = num;

	//开辟空间
	this->m_EmpArray = new Worker *[this->m_EmpNum];
	//将文件中数据，存到数组中
	this->init_Emp();

}

//展示菜单
void WorkerManage::Show_Menu()
{
	cout << "*********************************" << endl;
	cout << "***  欢迎使用教职工管理系统！ ***" << endl;
	cout << "*******  0，退出管理系统  *******" << endl;
	cout << "*******  1，添加职工信息  *******" << endl;
	cout << "*******  2，显示职工信息  *******" << endl;
	cout << "*******  3，删除离职职工  *******" << endl;
	cout << "*******  4，修改职工信息  *******" << endl;
	cout << "*******  5，查找职工信息  *******" << endl;
	cout << "*******  6，按照编号排序  *******" << endl;
	cout << "*******  7，清空所有文档  *******" << endl;
	cout << "*********************************" << endl;
}

//退出系统
void WorkerManage::ExitSystem()
{
	cout << "欢迎下次使用" << endl;
	system("pause");
	exit(0); //退出程序
}

//析构函数
WorkerManage::~WorkerManage()
{

}

//添加职工
void WorkerManage::Add_Emp()
{
	cout << "请输入添加职工数量：" << endl;
	int addNum = 0;
	cin >> addNum;

	if (addNum > 0)
	{
		//添加
		//计算添加新空间大小
		int newSize = this->m_EmpNum + addNum;   //新空间人数 = 原来记录人数+新增人数

		//开辟新空间
		Worker ** newSpace = new Worker*[newSize];

		//将原来空间下数据，拷贝到新空间下
		if (this->m_EmpArray != NULL)
		{
			for (int i = 0; i < this->m_EmpNum; i++)
			{
				newSpace[i] = this->m_EmpArray[i];
			}
		}

		//添加新数据
		for (int i = 0; i < addNum; i++)
		{
			int id;   //职工编号
			string name;   //职工编号
			int dSelect;   //部门选择

			cout << "请输入第" << i + 1 << "个新职工编号：" << endl;
			cin >> id;

			cout << "请输入第" << i + 1 << "个新职工姓名：" << endl;
			cin >> name;

			cout << "请选择该职工岗位：" << endl;
			cout << "1，普通职工" << endl;
			cout << "2，经理" << endl;
			cout << "3，老板" << endl;
			cin >> dSelect;

			Worker *worker = NULL;
			switch (dSelect)
			{
			case 1:
				worker = new Employee(id, name, 1);
				break;
			case 2:
				worker = new Manager(id, name, 2);
				break;
			case 3:
				worker = new Boss(id, name, 3);
				break;
			default:
				break;
			}

			//将创建职工职责，保存到数组中
			newSpace[this->m_EmpNum++] = worker;
		}

		//释放原有的空间
		delete[] this->m_EmpArray;

		//更改新空间指向
		this->m_EmpArray = newSpace;

		//更新新的职工人数
		this->m_EmpNum = newSize;

		//更新职工不为空标志
		this->m_FileIsEmpty = false;

		//添加成功
		cout << "成功添加" << addNum << "名新职工" << endl;

		//保存数据到文件中
		this->save();
	}
	else
	{
		cout << "输入数据有误" << endl;
	}

	system("pause");
	system("cls");
}

//保存文件
void WorkerManage::save()
{
	ofstream ofs;
	ofs.open(FILENAME, ios::out);    //用输入的方式打开文件   -- 写文件


	//将每个人数据写入到文件中
	for (int i = 0; i < this->m_EmpNum; i++)
	{
		ofs << this->m_EmpArray[i]->m_Id << " "
			<< this->m_EmpArray[i]->m_Name << " "
			<< this->m_EmpArray[i]->m_DeptId << endl;
	}

	//关闭文件
	ofs.close();
}

//统计文件人数
int WorkerManage::get_EmpNum()
{
	ifstream ifs;
	ifs.open(FILENAME, ios::in); //打开文件 读

	int id;
	string name;
	int dId;

	//人数
	int num = 0;

	while (ifs >> id&& ifs >> name && ifs >> dId)
	{
		num++;
	}

	return num;
}

//初始化职工
void WorkerManage::init_Emp()
{
	ifstream ifs;
	ifs.open(FILENAME, ios::in); //打开文件 读

	int id;
	string name;
	int dId;

	int index = 0;
	//读数据
	while (ifs >> id&& ifs >> name && ifs >> dId)
	{
		Worker *worker = NULL;

		switch (dId)
		{
			case 1:
				worker = new Employee(id, name, dId);
				break;
			case 2:
				worker = new Manager(id, name, dId);
				break;
			case 3:
				worker = new Boss(id, name, dId);
				break;
			default:
				break;
		}

		this->m_EmpArray[index] = worker;
		index++;
	}

	this->m_FileIsEmpty = false;
	//关闭文件
	ifs.close();
}

//显示职工
void WorkerManage::show_Emp()
{
	//判断文件是否为空
	if (this->m_FileIsEmpty)
	{
		cout << "文件不存在或者记录为空" << endl;
	}
	else
	{
		for (int i = 0; i < m_EmpNum; i++)
		{
			//利用多态调用程序端口
			this->m_EmpArray[i]->showInfo();
		}
	}

	//按任意键后清屏
	system("pause");
	system("cls");
}

//删除职工
void WorkerManage::Del_Emp()
{
	if (this->m_FileIsEmpty)
	{
		cout << "文件不存在或者记录为空" << endl;
	}
	else
	{
		//按照职工编号删除
		cout << "请输入想要删除职工编号：" << endl;
		int id = 0;
		cin >> id;

		int index = this->IsExist(id);
		if (index != -1)
		{
			//数据前移
			for (int i = index; i < this->m_EmpNum; i++)
			{
				this->m_EmpArray[i] = this->m_EmpArray[i + 1];
			}
			this->m_EmpNum--;    //更新数组中记录人员个数

			//数据更新到文件中
			this->save();

			cout << "删除成功" << endl;
		}
		else
		{
			cout << "删除失败，未找到该职工" << endl;
		}
	}
	system("pause");
	system("cls");
}

//判断职工是否存在，如果存在返回职工所在数组中的位置，不存在返回-1
int WorkerManage::IsExist(int id)
{
	int index = -1;
	for (int i = 0; i < this->m_EmpNum; i++)
	{
		if (this->m_EmpArray[i]->m_Id == id)
		{
			//找到职工
			index = i;

			break;
		}
	}
	return index;
}

//修改职工
void WorkerManage::Mod_Emp()
{
	if (this->m_FileIsEmpty)
	{
		cout << "文件不存在或记录为空" << endl;
	}
	else
	{
		cout << "修改职工编号：" << endl;
		int id;
		cin >> id;

		int ret = this->IsExist(id);
		if (ret != -1)
		{
			//查找到编号的职工
			delete this->m_EmpArray[ret];

			int newId = 0;
			string newName = "";
			int dSelect = 0;

			cout << "查到：" << id << "号职工，请输入新职工号：" << endl;
			cin >> newId;

			cout << "请输入新名字：" << endl;
			cin >> newName;

			cout << "请输入岗位：" << endl;
			cout << "1，普通职工" << endl;
			cout << "2，经理" << endl;
			cout << "3，老板" << endl;

			cin >> dSelect;

			Worker *worker = NULL;
			switch (dSelect)
			{
			case 1:
				worker = new Employee(newId, newName, dSelect);
				break;
			case 2:
				worker = new Manager(newId, newName, dSelect);
				break;
			case 3:
				worker = new Boss(newId, newName, dSelect);
				break;
			default:
				break;
			}

			//更新数据 到数组中
			this->m_EmpArray[ret] = worker;

			cout << "修改成功！" << endl;

			//保存到文件中
			this->save();
		}
		else
		{
			cout << "修改失败，查无此人" << endl;
		}
	}

	system("pause");
	system("cls");
}

//查找职工
void WorkerManage::Find_Emp()
{
	if (this->m_FileIsEmpty)
	{
		cout << "文件不存在或记录为空！" << endl;
	}
	else
	{
		cout << "请输入查找的方式：" << endl;
		cout << "1，按照职工的编号查找" << endl;
		cout << "2，按照职工的姓名查找" << endl;

		int select = 0;
		cin >> select;
		if (select == 1)
		{
			//按照编号查
			int id;
			cout << "请输入查找的职工编号：" << endl;
			cin >> id;

			int ret = IsExist(id);
			if (ret != -1)
			{
				//找到职工
				cout << "查找成功！该职工信息如下!" << endl;
				this->m_EmpArray[ret]->showInfo();
			}
			else
			{
				cout << "查无此人" << endl;
			}
		}
		else if (select == 2)
		{
			//按照姓名查
			string name;
			cout << "请输入查找的姓名：" << endl;
			cin >> name;

			//加入是否查到标志
			bool flag = false;   //默认未找到

			for (int i = 0; i < m_EmpNum; i++)
			{
				if (this->m_EmpArray[i]->m_Name == name)
				{
					cout << "查找成功，职工编号为："
						<< this->m_EmpArray[i]->m_Id
						<< "号职工信息如下：" << endl;

					flag = true;
					this->m_EmpArray[i]->showInfo();
				}
			}

			if (flag == false)
			{
				cout << "查无此人" << endl;
			}
		}
		else
		{
			cout << "输入选项有误！" << endl;
		}
	}

	system("pause");
	system("cls");
}

//按照编号排序
void WorkerManage::Sort_Emp()
{
	if (this->m_FileIsEmpty)
	{
		cout << "文件不存在或记录为空！" << endl;
		system("pause");
		system("cls");
	}
	else
	{
		cout << "请输入排序的方式：" << endl;
		cout << "1，按照职工的编号升序" << endl;
		cout << "2，按照职工的编号降序" << endl;

		int select = 0;
		cin >> select;
		for (int i = 0; i < m_EmpNum; i++)
		{
			int minOrMax = i;   //声明最小值
			for (int j = i + 1; j < this->m_EmpNum; j++)
			{
				if (select == 1)   //升序
				{
					if (this->m_EmpArray[minOrMax]->m_Id > this->m_EmpArray[j]->m_Id)
					{
						minOrMax = j;
					}
				}
				else //降序
				{
					if (this->m_EmpArray[minOrMax]->m_Id < this->m_EmpArray[j]->m_Id)
					{
						minOrMax = j;
					}
				}
			}
			//判断一开始认定的最大值或最小值
			if (i != minOrMax)
			{
				Worker * temp = this->m_EmpArray[i];
				this->m_EmpArray[i] = this->m_EmpArray[minOrMax];
				this->m_EmpArray[minOrMax] = temp;
			}
		}
		cout << "排序成功！" << endl;
		this->save();    //排序结果保存
		this->show_Emp();
	}
}

//清空文件
void WorkerManage::Clean_File()
{
	cout << "确定清空？" << endl;
	cout << "1，确定" << endl;
	cout << "2，返回" << endl;

	int select = 0;
	cin >> select;

	if (select == 1)
	{
		//清空文件
		ofstream ofs(FILENAME, ios::trunc);   //删除文件后重新创建
		ofs.close();

		if (this->m_EmpArray != NULL)
		{
			//删除堆区的每个职工对象
			for (int i = 0; i < this->m_EmpNum; i++)
			{
				delete this->m_EmpArray[i];
				this->m_EmpArray[i] = NULL;
			}

			//删除堆区数组指针
			delete[] this->m_EmpArray;
			this->m_EmpArray = NULL;
			this->m_EmpNum = 0;
			this->m_FileIsEmpty = true;
		}

		cout << "清空成功" << endl;
	}

	system("pause");
	system("cls");
}

workManager.h

#include<iostream>
#include<fstream>
using namespace std;

#include"worker.h"
#include"employee.h"
#include"manager.h"
#include"boss.h"

#define FILENAME "empFile.txt"

class WorkerManage
{
public:
	//构造函数
	WorkerManage();
	
	//展示菜单
	void Show_Menu();

	//退出系统
	void ExitSystem();

	//记录职工人数
	int m_EmpNum;
	
	//职工数组指针
	Worker ** m_EmpArray;

	//添加职工
	void Add_Emp();

	//保存文件
	void save();

	//判断文件是否为空
	bool m_FileIsEmpty;

	//统计文件人数
	int get_EmpNum();

	//初始化职工
	void init_Emp();

	//显示职工
	void show_Emp();

	//删除职工
	void Del_Emp();

	//判断职工是否存在，如果存在返回职工所在数组中的位置，不存在返回-1
	int IsExist(int id);

	//修改职工
	void Mod_Emp();

	//查找职工
	void Find_Emp();

	//按照编号排序
	void Sort_Emp();

	//清空文件
	void Clean_File();

	//析构函数
	~WorkerManage();
};

workManager.cpp

#include "workManager.h"

//构造函数
WorkerManage::WorkerManage()
{
	ifstream ifs;
	ifs.open(FILENAME, ios::in); //读文件

	//1，文件不存在
	if (!ifs.is_open())
	{
		cout << "文件不存在" << endl;

		//初始化属性
		//初始化记录人数
		this->m_EmpNum = 0;
		//初始化数组指针
		this->m_EmpArray = NULL;
		//初始化文件是否为空
		this->m_FileIsEmpty = true;
		ifs.close();
		return;
	}

	//2，文件存在，数据为空
	char ch;
	ifs >> ch;
	if (ifs.eof())
	{
		//文件为空
		cout << "文件为空!" << endl;
		//初始化属性
		//初始化记录人数
		this->m_EmpNum = 0;
		//初始化数组指针
		this->m_EmpArray = NULL;
		//初始化文件是否为空
		this->m_FileIsEmpty = true;
		ifs.close();
		return;
	}

	//3，文件存在，并且记录数据
	int num = this->get_EmpNum();
	//cout << "职工人数为：" << num << endl;
	this->m_EmpNum = num;

	//开辟空间
	this->m_EmpArray = new Worker *[this->m_EmpNum];
	//将文件中数据，存到数组中
	this->init_Emp();

}

//展示菜单
void WorkerManage::Show_Menu()
{
	cout << "*********************************" << endl;
	cout << "***  欢迎使用教职工管理系统！ ***" << endl;
	cout << "*******  0，退出管理系统  *******" << endl;
	cout << "*******  1，添加职工信息  *******" << endl;
	cout << "*******  2，显示职工信息  *******" << endl;
	cout << "*******  3，删除离职职工  *******" << endl;
	cout << "*******  4，修改职工信息  *******" << endl;
	cout << "*******  5，查找职工信息  *******" << endl;
	cout << "*******  6，按照编号排序  *******" << endl;
	cout << "*******  7，清空所有文档  *******" << endl;
	cout << "*********************************" << endl;
}

//退出系统
void WorkerManage::ExitSystem()
{
	cout << "欢迎下次使用" << endl;
	system("pause");
	exit(0); //退出程序
}

//析构函数
WorkerManage::~WorkerManage()
{

}

//添加职工
void WorkerManage::Add_Emp()
{
	cout << "请输入添加职工数量：" << endl;
	int addNum = 0;
	cin >> addNum;

	if (addNum > 0)
	{
		//添加
		//计算添加新空间大小
		int newSize = this->m_EmpNum + addNum;   //新空间人数 = 原来记录人数+新增人数

		//开辟新空间
		Worker ** newSpace = new Worker*[newSize];

		//将原来空间下数据，拷贝到新空间下
		if (this->m_EmpArray != NULL)
		{
			for (int i = 0; i < this->m_EmpNum; i++)
			{
				newSpace[i] = this->m_EmpArray[i];
			}
		}

		//添加新数据
		for (int i = 0; i < addNum; i++)
		{
			int id;   //职工编号
			string name;   //职工编号
			int dSelect;   //部门选择

			cout << "请输入第" << i + 1 << "个新职工编号：" << endl;
			cin >> id;

			cout << "请输入第" << i + 1 << "个新职工姓名：" << endl;
			cin >> name;

			cout << "请选择该职工岗位：" << endl;
			cout << "1，普通职工" << endl;
			cout << "2，经理" << endl;
			cout << "3，老板" << endl;
			cin >> dSelect;

			Worker *worker = NULL;
			switch (dSelect)
			{
			case 1:
				worker = new Employee(id, name, 1);
				break;
			case 2:
				worker = new Manager(id, name, 2);
				break;
			case 3:
				worker = new Boss(id, name, 3);
				break;
			default:
				break;
			}

			//将创建职工职责，保存到数组中
			newSpace[this->m_EmpNum++] = worker;
		}

		//释放原有的空间
		delete[] this->m_EmpArray;

		//更改新空间指向
		this->m_EmpArray = newSpace;

		//更新新的职工人数
		this->m_EmpNum = newSize;

		//更新职工不为空标志
		this->m_FileIsEmpty = false;

		//添加成功
		cout << "成功添加" << addNum << "名新职工" << endl;

		//保存数据到文件中
		this->save();
	}
	else
	{
		cout << "输入数据有误" << endl;
	}

	system("pause");
	system("cls");
}

//保存文件
void WorkerManage::save()
{
	ofstream ofs;
	ofs.open(FILENAME, ios::out);    //用输入的方式打开文件   -- 写文件


	//将每个人数据写入到文件中
	for (int i = 0; i < this->m_EmpNum; i++)
	{
		ofs << this->m_EmpArray[i]->m_Id << " "
			<< this->m_EmpArray[i]->m_Name << " "
			<< this->m_EmpArray[i]->m_DeptId << endl;
	}

	//关闭文件
	ofs.close();
}

//统计文件人数
int WorkerManage::get_EmpNum()
{
	ifstream ifs;
	ifs.open(FILENAME, ios::in); //打开文件 读

	int id;
	string name;
	int dId;

	//人数
	int num = 0;

	while (ifs >> id&& ifs >> name && ifs >> dId)
	{
		num++;
	}

	return num;
}

//初始化职工
void WorkerManage::init_Emp()
{
	ifstream ifs;
	ifs.open(FILENAME, ios::in); //打开文件 读

	int id;
	string name;
	int dId;

	int index = 0;
	//读数据
	while (ifs >> id&& ifs >> name && ifs >> dId)
	{
		Worker *worker = NULL;

		switch (dId)
		{
			case 1:
				worker = new Employee(id, name, dId);
				break;
			case 2:
				worker = new Manager(id, name, dId);
				break;
			case 3:
				worker = new Boss(id, name, dId);
				break;
			default:
				break;
		}

		this->m_EmpArray[index] = worker;
		index++;
	}

	this->m_FileIsEmpty = false;
	//关闭文件
	ifs.close();
}

//显示职工
void WorkerManage::show_Emp()
{
	//判断文件是否为空
	if (this->m_FileIsEmpty)
	{
		cout << "文件不存在或者记录为空" << endl;
	}
	else
	{
		for (int i = 0; i < m_EmpNum; i++)
		{
			//利用多态调用程序端口
			this->m_EmpArray[i]->showInfo();
		}
	}

	//按任意键后清屏
	system("pause");
	system("cls");
}

//删除职工
void WorkerManage::Del_Emp()
{
	if (this->m_FileIsEmpty)
	{
		cout << "文件不存在或者记录为空" << endl;
	}
	else
	{
		//按照职工编号删除
		cout << "请输入想要删除职工编号：" << endl;
		int id = 0;
		cin >> id;

		int index = this->IsExist(id);
		if (index != -1)
		{
			//数据前移
			for (int i = index; i < this->m_EmpNum; i++)
			{
				this->m_EmpArray[i] = this->m_EmpArray[i + 1];
			}
			this->m_EmpNum--;    //更新数组中记录人员个数

			//数据更新到文件中
			this->save();

			cout << "删除成功" << endl;
		}
		else
		{
			cout << "删除失败，未找到该职工" << endl;
		}
	}
	system("pause");
	system("cls");
}

//判断职工是否存在，如果存在返回职工所在数组中的位置，不存在返回-1
int WorkerManage::IsExist(int id)
{
	int index = -1;
	for (int i = 0; i < this->m_EmpNum; i++)
	{
		if (this->m_EmpArray[i]->m_Id == id)
		{
			//找到职工
			index = i;

			break;
		}
	}
	return index;
}

//修改职工
void WorkerManage::Mod_Emp()
{
	if (this->m_FileIsEmpty)
	{
		cout << "文件不存在或记录为空" << endl;
	}
	else
	{
		cout << "修改职工编号：" << endl;
		int id;
		cin >> id;

		int ret = this->IsExist(id);
		if (ret != -1)
		{
			//查找到编号的职工
			delete this->m_EmpArray[ret];

			int newId = 0;
			string newName = "";
			int dSelect = 0;

			cout << "查到：" << id << "号职工，请输入新职工号：" << endl;
			cin >> newId;

			cout << "请输入新名字：" << endl;
			cin >> newName;

			cout << "请输入岗位：" << endl;
			cout << "1，普通职工" << endl;
			cout << "2，经理" << endl;
			cout << "3，老板" << endl;

			cin >> dSelect;

			Worker *worker = NULL;
			switch (dSelect)
			{
			case 1:
				worker = new Employee(newId, newName, dSelect);
				break;
			case 2:
				worker = new Manager(newId, newName, dSelect);
				break;
			case 3:
				worker = new Boss(newId, newName, dSelect);
				break;
			default:
				break;
			}

			//更新数据 到数组中
			this->m_EmpArray[ret] = worker;

			cout << "修改成功！" << endl;

			//保存到文件中
			this->save();
		}
		else
		{
			cout << "修改失败，查无此人" << endl;
		}
	}

	system("pause");
	system("cls");
}

//查找职工
void WorkerManage::Find_Emp()
{
	if (this->m_FileIsEmpty)
	{
		cout << "文件不存在或记录为空！" << endl;
	}
	else
	{
		cout << "请输入查找的方式：" << endl;
		cout << "1，按照职工的编号查找" << endl;
		cout << "2，按照职工的姓名查找" << endl;

		int select = 0;
		cin >> select;
		if (select == 1)
		{
			//按照编号查
			int id;
			cout << "请输入查找的职工编号：" << endl;
			cin >> id;

			int ret = IsExist(id);
			if (ret != -1)
			{
				//找到职工
				cout << "查找成功！该职工信息如下!" << endl;
				this->m_EmpArray[ret]->showInfo();
			}
			else
			{
				cout << "查无此人" << endl;
			}
		}
		else if (select == 2)
		{
			//按照姓名查
			string name;
			cout << "请输入查找的姓名：" << endl;
			cin >> name;

			//加入是否查到标志
			bool flag = false;   //默认未找到

			for (int i = 0; i < m_EmpNum; i++)
			{
				if (this->m_EmpArray[i]->m_Name == name)
				{
					cout << "查找成功，职工编号为："
						<< this->m_EmpArray[i]->m_Id
						<< "号职工信息如下：" << endl;

					flag = true;
					this->m_EmpArray[i]->showInfo();
				}
			}

			if (flag == false)
			{
				cout << "查无此人" << endl;
			}
		}
		else
		{
			cout << "输入选项有误！" << endl;
		}
	}

	system("pause");
	system("cls");
}

//按照编号排序
void WorkerManage::Sort_Emp()
{
	if (this->m_FileIsEmpty)
	{
		cout << "文件不存在或记录为空！" << endl;
		system("pause");
		system("cls");
	}
	else
	{
		cout << "请输入排序的方式：" << endl;
		cout << "1，按照职工的编号升序" << endl;
		cout << "2，按照职工的编号降序" << endl;

		int select = 0;
		cin >> select;
		for (int i = 0; i < m_EmpNum; i++)
		{
			int minOrMax = i;   //声明最小值
			for (int j = i + 1; j < this->m_EmpNum; j++)
			{
				if (select == 1)   //升序
				{
					if (this->m_EmpArray[minOrMax]->m_Id > this->m_EmpArray[j]->m_Id)
					{
						minOrMax = j;
					}
				}
				else //降序
				{
					if (this->m_EmpArray[minOrMax]->m_Id < this->m_EmpArray[j]->m_Id)
					{
						minOrMax = j;
					}
				}
			}
			//判断一开始认定的最大值或最小值
			if (i != minOrMax)
			{
				Worker * temp = this->m_EmpArray[i];
				this->m_EmpArray[i] = this->m_EmpArray[minOrMax];
				this->m_EmpArray[minOrMax] = temp;
			}
		}
		cout << "排序成功！" << endl;
		this->save();    //排序结果保存
		this->show_Emp();
	}
}

//清空文件
void WorkerManage::Clean_File()
{
	cout << "确定清空？" << endl;
	cout << "1，确定" << endl;
	cout << "2，返回" << endl;

	int select = 0;
	cin >> select;

	if (select == 1)
	{
		//清空文件
		ofstream ofs(FILENAME, ios::trunc);   //删除文件后重新创建
		ofs.close();

		if (this->m_EmpArray != NULL)
		{
			//删除堆区的每个职工对象
			for (int i = 0; i < this->m_EmpNum; i++)
			{
				delete this->m_EmpArray[i];
				this->m_EmpArray[i] = NULL;
			}

			//删除堆区数组指针
			delete[] this->m_EmpArray;
			this->m_EmpArray = NULL;
			this->m_EmpNum = 0;
			this->m_FileIsEmpty = true;
		}

		cout << "清空成功" << endl;
	}

	system("pause");
	system("cls");
}

worker.h

#pragma once
#include<iostream>
using namespace std;
#include<string>

//职工抽象类
class Worker
{
public:
	//显示个人信息
	virtual void showInfo() = 0;

	//获取岗位名称
	virtual string getDeptName() = 0;

	//职工编号
	int m_Id;
	//职工姓名
	string m_Name;
	//部门编号
	int m_DeptId;
};

boss.h

#pragma once
#include <iostream>
using namespace std;
#include"worker.h";

class Boss :public Worker
{
public:

	Boss(int id, string name, int dId);

	//显示个人信息
	virtual void showInfo();

	//获取岗位名称
	virtual string getDeptName();
};

boss.cpp

#include"boss.h"

//构造函数
Boss::Boss(int id, string name, int dId)
{
	this->m_Id = id;
	this->m_Name = name;
	this->m_DeptId = dId;
}

//显示个人信息
void Boss::showInfo()
{
	cout << "职工编号：" << this->m_Id
		<< "\t职工姓名：" << this->m_Name
		<< "\t岗位：" << this->getDeptName()
		<< "\t岗位职责：管理公司所有事物" << endl;
}

//获取岗位名称
string Boss::getDeptName()
{
	return string("总裁");
}

employee.h

//普通员工文件
#pragma once
#include<iostream>
#include"worker.h"
using namespace std;

class Employee:public Worker
{
public:
	Employee(int id,string name,int dId);

	//显示个人信息
	virtual void showInfo();

	//获取岗位名称
	virtual string getDeptName();
};

employee.cpp

#include"employee.h"

//构造函数
Employee::Employee(int id, string name, int dId)
{
	this->m_Id = id;
	this->m_Name = name;
	this->m_DeptId = dId;
}

//显示个人信息
void Employee::showInfo()
{
	cout << "职工编号：" << this->m_Id
		<< "\t职工姓名：" << this->m_Name
		<< "\t岗位：" << this->getDeptName()
		<<"\t岗位职责：完成经理交给的任务"<< endl;
}

//获取岗位名称
string Employee::getDeptName()
{
	return string("员工");
}

manager.h

#pragma once
#include <iostream>
using namespace std;
#include"worker.h";

class Manager :public Worker
{
public:

	Manager(int id, string name, int dId);

	//显示个人信息
	virtual void showInfo();

	//获取岗位名称
	virtual string getDeptName();
};

manager.cpp

#include"manager.h"

//构造函数
Manager::Manager(int id, string name, int dId)
{
	this->m_Id = id;
	this->m_Name = name;
	this->m_DeptId = dId;
}

//显示个人信息
void Manager::showInfo()
{
	cout << "职工编号：" << this->m_Id
		<< "\t职工姓名：" << this->m_Name
		<< "\t岗位：" << this->getDeptName()
		<< "\t岗位职责：完成老板交给的任务，并且发任务给员工" << endl;
}

//获取岗位名称
string Manager::getDeptName()
{
	return string("经理");
}