C++利用多态实现职工管理系统(项目开发)

时间:2021-10-04 08:11:56

分析

首先看一下这个项目的文件:

C++利用多态实现职工管理系统(项目开发)

主要分为两部分:

主体部分:
main.cpp和workManager.h,workManager.cpp职工部分(这里采用多态的方式编写):
主要是worker.h和worker.cpp
三种职位:boss,employee,manager

经过分析是否大概知道了其中各部分的意思呢?

看起来这里面有很多,但是正是这种多个文件编写才时代码更加简洁。

所以在正式写项目之前一定要先考虑好整体架构,在进行编写。

项目整体架构:

这个项目的难度并不大,主要是要学会这个项目整体架构是怎样安排的。

C++利用多态实现职工管理系统(项目开发)

左边是主体部分。

主要是整个项目的功能,将主界面的所有功能通过代码和右边的不同人之间进行实现。

包含了上面几个功能函数,还有一些没有写出来

右边则是三种职工的信息。

每个人都有自己的姓名,编号,职位,然后包含两个函数,显示个人信息和获取岗位信息。

主要是通过数组进行存储的

其它的也没什么需要过多介绍的,主要是要理解上面的整体架构图,详细的代码编写并不算复杂

部分运行截图

C++利用多态实现职工管理系统(项目开发)

C++利用多态实现职工管理系统(项目开发)

C++利用多态实现职工管理系统(项目开发)

代码

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
		<< "	职工姓名:" << this->m_Name
		<< "	岗位:" << this->getDeptName()
		<< "	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
		<< "	职工姓名:" << this->m_Name
		<< "	岗位:" << this->getDeptName()
		<<"	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
		<< "	职工姓名:" << this->m_Name
		<< "	岗位:" << this->getDeptName()
		<< "	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");
}

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原文链接:https://blog.csdn.net/qq_46423166/article/details/112241122