【C++】职工管理系统

1.需求分析以及案例展示

2.创建项目

3.创建管理类

4.菜单功能

5.退出功能

6.创建职工类

#pragma once
#include 
#include 
using namespace std;

//职工抽象基类
class Worker {
public:
	//显示个人信息
	virtual void showInfo() = 0;
	//获取岗位名称
	virtual string getDeptName() = 0;

	int m_Id;//职工编号
	string m_Name;//职工姓名
	int m_DeptId;//职工所在部门名称编号
};

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

//员工类
class Employee:public Worker {
public:
	//构造函数
	Employee(int id, string name, int dId);

	//显示个人信息
	virtual void showInfo();

	//获取职工岗位名称
	virtual string getDeptName();
};

#include "employee.h"


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;
}

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

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

//经理类
class Manager :public Worker {
public:
	//构造函数
	Manager(int id, string name, int dId);

	//显示个人信息
	virtual void showInfo();

	//获取职工岗位名称
	virtual string getDeptName();
};

#include "manager.h"


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，并下发任务给员工" << endl;
}

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

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

//老板类
class Boss :public Worker {
public:
	//构造函数
	Boss(int id, string name, int dId);

	//显示个人信息
	virtual void showInfo();

	//获取职工岗位名称
	virtual string getDeptName();
};

boss.cpp代码

#include "boss.h"


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：管理公司所有事务" << endl;
}

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

7.添加职工

//添加职工
void WorkerManager::Add_Emp() {
	cout << "请输入添加职工数量：" << endl;

	int addNum = 0; //保存用户的输入数量
	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];
			}
		}

		//批量添加新数据
		for (int i = 0; i < addNum; i++) {
			int id;//职工编号
			string name;//职工姓名
			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 + i] = worker;
		}

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

		//更改新空间的指向
		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;

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

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

	//按任意键后 清屏回到上级目录
	system("pause");
	system("cls");
}

8.文件交互-写文件

9.文件交互-读文件

（1）情况一：文件未创建

（2）情况二：文件存在且数据为空

（3）情况三：文件存在且保存职工数据

10.显示职工

11.删除职工

12.修改职工

13.查找职工

14.排序

15.清空文件

16.总代码

1.职工管理系统.cpp

#include 
using namespace std;
#include "workerManager.h"
#include "worker.h"
#include "employee.h"
#include "manager.h"
#include "boss.h"

int main() {
	//实例化对象
	WorkerManager wm;
	int choice = 0;
	while (true) {
		//展示菜单
		wm.Show_Menu();
		cout << "请输入您的选择： " << endl;
		cin >> choice;

		switch (choice)
		{
		case 0: //退出系统
			wm.ExitSystem();
			break;
		case 1: //添加职工
			wm.Add_Emp();
			break;
		case 2: //显示职工
			wm.Show_Emp();
			break;
		case 3: //删除职工
			wm.Del_Emp();
			break;
		case 4: //修改职工
			wm.Mod_Emp();
			break;
		case 5: //查找职工
			wm.Find_Emp();
			break;
		case 6: //排序职工
			wm.Sort_Emp();
			break;
		case 7: //清空文件
			wm.Clean_File();
			break;
		default:
			system("cls");
			break;
		}
	}

	system("pause");
	return 0;
}

2.wokerManager.cpp

#include "workerManager.h"

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

	//1.文件不存在
	if (!ifs.is_open()) {
		//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;
		//初始化文件记为空
		this->m_FileIsEmpty = true;
		//关闭文件
		ifs.close();
		return; //退出当前函数
	}

	//2.文件存在，并且没有记录数据
	char ch;
	ifs >> ch;
	if (ifs.eof()) { //eof end of file
		this->m_EmpNum = 0;
		this->m_FileIsEmpty = true;
		this->m_EmpArray = NULL;
		ifs.close();
		return;
	}

	//3.文件存在，并且记录数据
	int num = this->get_EmpNum();
	this->m_EmpNum = num;

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

}

//析构函数
WorkerManager::~WorkerManager() {
	if (this->m_EmpArray != NULL) {
		for (int i = 0; i < this->m_EmpNum; i++) {
			if (this->m_EmpArray[i] != NULL) {
				delete this->m_EmpArray[i];
			}
		}
		delete[]this->m_EmpArray;
		this->m_EmpArray = NULL;
	}
}

//展示菜单
void WorkerManager::Show_Menu() {
	cout << "******************************" << endl;
	cout << "****欢迎使用职工管理系统！****" << endl;
	cout << "******* 0.退出管理系统 *******" << endl;
	cout << "******* 1.增加职工信息 *******" << 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;
	cout << endl;
}

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

//添加职工
void WorkerManager::Add_Emp() {
	cout << "请输入添加职工数量：" << endl;

	int addNum = 0; //保存用户的输入数量
	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];
			}
		}

		//批量添加新数据
		for (int i = 0; i < addNum; i++) {
			int id;//职工编号
			string name;//职工姓名
			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 + i] = worker;
		}

		//释放原有空间
		if (this->m_EmpArray != NULL)
		{
			delete[] this->m_EmpArray;
			this->m_EmpArray = NULL;
			this->m_EmpNum = 0;
			this->m_FileIsEmpty = true;
		}

		//更改新空间的指向
		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;

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

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

	//按任意键后 清屏回到上级目录
	system("pause");
	system("cls");
}

//保存文件
void WorkerManager::save() {
	ofstream ofs;
	ofs.open(FILENAME, ios::out); //用输出的方式打开文件--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();
}

//统计文件在人数
int WorkerManager::get_EmpNum() {
	ifstream ifs(FILENAME, ios::in); //打开文件 读文件

	int id;
	string name;
	int dId;

	int num = 0;
	while (ifs >> id && ifs >> name && ifs >> dId) {
		//统计职工人数变量
		num++;
	}

	return num;
}

//初始化员工
void WorkerManager::init_Emp() {
	ifstream ifs(FILENAME, ios::in);

	int id;
	string name;
	int dId;

	int index = 0;

	while (ifs >> id && ifs >> name && ifs >> dId) {
		Worker* worker = NULL;

		if (dId == 1) { //普通职工
			worker = new Employee(id, name, dId);
		}
		else if (dId == 2) { //经理
			worker = new Manager(id, name, dId);
		}
		else { //老板
			worker = new Boss(id, name, dId);
		}
		this->m_EmpArray[index] = worker;
		index++;
	}

	ifs.close();//关闭文件
}

//显示职工
void WorkerManager::Show_Emp() {
	if (this->m_FileIsEmpty) {
		cout << "文件不存在或记录为空!" << endl;
	}
	else {
		for (int i = 0; i < m_EmpNum; i++) {
			//利用多态调用接口
			this->m_EmpArray[i]->showInfo();
		}
	}

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


//按照职工编号判断职工是否存在，若存在返回职工在数组中的位置，不存在返回-1
int WorkerManager::IsExist(int id) {
	int index = -1;

	for (int i = 0; i < this->m_EmpNum; i++) {
		if (this->m_EmpArray[i]->m_Id == id) {
			index = i;

			break;
		}
	}
	return index;
}

//删除职工
void WorkerManager::Del_Emp() {
	if (this->m_FileIsEmpty) {
		cout << "文件不存在或记录为空！" << endl;
	}
	else {
		//按职工编号删除
		cout << "请输入所要删除职工的编号：" << endl;
		int id = 0;
		cin >> id;

		int index = this->IsExist(id);

		if (index != -1) { //说明index上位置数据需要删除
			for (int i = index; i < this->m_EmpNum - 1; i++) {
				this->m_EmpArray[i] = this->m_EmpArray[i+1];
			}
			this->m_EmpNum--;

			this->save(); //删除后数据同步到文件中
			cout << "删除成功！" << endl;
		}
		else {
			cout << "删除失败，未找到该职工" << endl;
		}
	}


	//按任意键继续 并且清屏
	system("pause");
	system("cls");
}

//修改职工信息
void WorkerManager::Mod_Emp() {
	if (this->m_FileIsEmpty) {
		cout << "文件不存在或记录为空" << endl;
	}
	else {
		cout << "请输入所要修改职工的编号：" << endl;
		int id=0;
		cin >> id;

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

			int new_id = 0;
			string new_name = "";
			int new_dId = 0;

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

			cout << "请输入新的姓名：" << endl;
			cin >> new_name;

			cout << "请输入的岗位：" << endl;
			cout << "1、普通职工" << endl;
			cout << "2、经理" << endl;
			cout << "3、老板" << endl;
			cin >> new_dId;

			Worker* worker = NULL;
			switch (new_dId)
			{
			case 1: {
				worker=new Employee(new_id,new_name,new_dId);
			}
				break;
			case 2: {
				worker = new Manager(new_id, new_name, new_dId);
			}
				  break;
			case 3: {
				worker = new Boss(new_id, new_name, new_dId);
			}
				  break;
			default:
				break;
			}
			//更改数据 到数组中
			this->m_EmpArray[index] = worker;

			cout << "修改成功！" << endl;

			//保存到文件中
			this->save();
		}
		else {
			cout << "修改失败，未能找到该职工" << endl;
		}
	}
	//按任意键继续 并且清屏
	system("pause");
	system("cls");
}

//查找职工
void WorkerManager::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、按职工编号查找 " << endl;
		cout << "2、按职工姓名查找 " << endl;

		int select = 0;
		cin >> select;

		if (select == 1) {
			//按编号查找
			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 << "查找失败，查无此人！" << endl;
			}
		}
		else if (select == 2) {
			//按姓名查找
			string name;
			cout << "请输入查找职工的姓名：" << endl;
			cin >> name;

			//加入判断是否查到的标志
			bool flag = false;//默认未找到职工

			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;

					//调用显示信息接口
					this->m_EmpArray[i]->showInfo();
				}
			}
			if (flag == false) {
				cout << "查找失败，查无此人！" << endl;
			}
		}
		else {
			cout << "输入选型有误！" << endl;
		}
	}

	//按任意键继续，清屏
	system("pause");
	system("cls");
}

//排序职工
void WorkerManager::Sort_Emp() {
	if (m_FileIsEmpty) {
		cout << "文件不存在或记录为空！" << endl;
		//按任意键继续，清屏
		system("pause");
		system("cls");
	}
	else {
		cout << "请选择职工编号排序方式：" << endl;
		cout << "1、职工编号升序排序" << endl;
		cout << "2、职工编号降序排序" << endl;

		int select = 0;
		cin >> select;
		if (select != 1 && select != 2) { //输入指令不正确
			cout << "输入有误！" << endl;
			//按任意键继续，清屏
			system("pause");
			system("cls");
			return;
		}

		//利用选择排序方式
		for (int i = 0; i < this->m_EmpNum-1; i++) {
			int minOrMax = i;
			for (int j = i + 1; j < this->m_EmpNum; j++) {
				if (select == 1) {  //升序排序
					if (this->m_EmpArray[minOrMax]->m_Id > this->m_EmpArray[j]->m_Id) {
						minOrMax = j;
					}
				}
				if (select == 2) {  //降序排序
					if (this->m_EmpArray[minOrMax]->m_Id < this->m_EmpArray[j]->m_Id) {
						minOrMax = j;
					}
				}
			}
			if (minOrMax != i) { //将最大值前移
				Worker* temp = m_EmpArray[i];
				m_EmpArray[i] = m_EmpArray[minOrMax];
				m_EmpArray[minOrMax] = temp;
			}
		}

		this->save();  //保存文件
		cout << "排序完成,排序后结果为：" << endl;
		this->Show_Emp(); //已经有清屏函数了，下面不需要外加了
	}
}

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

	int select = 0;
	cin >> select;
	if (select != 1 && select != 2) {  //输入指令不正确
		cout << "输入有误！" << endl;
		//按任意键继续，清屏
		system("pause");
		system("cls");
		return;
	}

	if (select == 2) 
	{
		system("cls");
		return;
	}
	else {
		ofstream ofs(FILENAME, ios::trunc);
		ofs.close();

		if (this->m_EmpArray != NULL) 
		{
			for (int i = 0; i < this->m_EmpNum; i++) 
			{
				if(this->m_EmpArray[i]!=NULL) 
				{
					delete this->m_EmpArray[i];
				}
			}
			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");
}

3.workerManager.h

#pragma once //防止头文件重复包含
#include  //包含输入输出流头文件
using namespace std; //使用标准命名空间
#include "worker.h"
#include "employee.h"
#include "manager.h"
#include "boss.h"
#include 
#define FILENAME "empFile.txt"

class WorkerManager {
public:
	//构造函数
	WorkerManager();
	
	//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 标志
	bool m_FileIsEmpty;

	//统计文件中人数
	int get_EmpNum();

	//初始化员工
	void init_Emp();

	//显示员工
	void Show_Emp();

	//删除职工
	void Del_Emp();

	//按照职工编号判断职工是否存在，若存在返回职工在数组中的位置，不存在返回-1
	int IsExist(int id);

	//修改职工
	void Mod_Emp();

	//查找职工
	void Find_Emp();

	//排序职工
	void Sort_Emp();

	//清空文件
	void Clean_File();

	//析构函数
	~WorkerManager();
}; 

4.worker.h

#pragma once
#include 
#include 
using namespace std;

//职工抽象基类
class Worker {
public:
	//显示个人信息
	virtual void showInfo() = 0;
	//获取岗位名称
	virtual string getDeptName() = 0;

	int m_Id;//职工编号
	string m_Name;//职工姓名
	int m_DeptId;//职工所在部门名称编号
};

5.emloyee.h

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

//员工类
class Employee:public Worker {
public:
	//构造函数
	Employee(int id, string name, int dId);

	//显示个人信息
	virtual void showInfo();

	//获取职工岗位名称
	virtual string getDeptName();
};

6.employ.cpp

#include "employee.h"


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;
}

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

7.manager.h

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

//经理类
class Manager :public Worker {
public:
	//构造函数
	Manager(int id, string name, int dId);

	//显示个人信息
	virtual void showInfo();

	//获取职工岗位名称
	virtual string getDeptName();
};

8.manager.cpp

#include "manager.h"


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，并下发任务给员工" << endl;
}

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

9.boss.h

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

//老板类
class Boss :public Worker {
public:
	//构造函数
	Boss(int id, string name, int dId);

	//显示个人信息
	virtual void showInfo();

	//获取职工岗位名称
	virtual string getDeptName();
};

10.boss.cpp

#include "boss.h"


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：管理公司所有事务" << endl;
}

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