基于多态的职工管理

职工管理系统.cpp

#include<iostream>
#include"workManager.h"
using namespace std;

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


int main() {

	WorkerManager wm;
	int choice = 0;
	while (true) {
		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://清除文件
			wm.Clean_File();
			break;
		default:
			system("cls");//刷新屏幕
			break;
		}
	}

	system("pause");
	return 0;
}

Worker.h

#pragma once//防止头文件重复包含
#include<iostream>//包含输入输出流的头文件
#include<string>//包含字符串的头文件
using namespace std;//使用标准命名空间

//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;//职工所在部分名称编号
};

employee.h

#pragma once
#include<iostream>//包含输入输出流的头文件
#include<string>//包含字符串的头文件
using namespace std;//使用标准命名空间
#include "Worker.h"

//普通员工文件
class Employee:public Worker {

public:

	//提供一个构造函数，来初始化员工属性
	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"
#include<iostream>//包含输入输出流的头文件
#include<string>
using namespace std;//使用标准命名空间

//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>
#include<string>
using namespace std;
#include"Worker.h"



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

};

manager.cpp

#include<iostream>
#include<string>
using namespace std;
#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，并且下发任务给员工"
		<< endl;
}
//获取岗位名称
string Manager::getDeptName() {
	return string("经理");
}

boos.h

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



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

};

boss.cpp

#include<iostream>
#include<string>
using namespace std;
#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：管理公司所有事务"
		<< endl;
}
//获取岗位名称
string Boss::getDeptName() {
	return string("老板");
}

WorkerManager.h

#pragma once//防止头文件重复包含
#include<iostream>//包含输入输出流的头文件
#include<string.h>//包含字符串的头文件
using namespace std;//使用标准命名空间
#include"Worker.h"
#include"employee.h"
#include"manager.h"
#include"boss.h"
//职工管理类
class WorkerManager {
public:
	//构造函数
	WorkerManager();

	//析构函数
	~WorkerManager();

	//展示菜单
	void show_Menu();

	//退出系统
	void exitSystem();

	//记录职工人数
	int m_EmpNum;
	//添加员工
	void Add_Emp();
	//职工数组指针
	Worker **m_EmpArrary;
	
	//标识文件是否为空
	bool m_FileIsEmpty;

	//保存文件
	void save();

	//统计文件中人数
	int get_EmpNum();

	//初始化员工
	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
	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();
};

workerManager.cpp

#include"workManager.h"
#include<fstream>
#define FILENAME "empFile.txt"

//空参构造
//存放创建该类就必须执行的代码
WorkerManager::WorkerManager() {
	
	ifstream ifs;
	ifs.open(FILENAME, ios::in);

	//1.文件不存在
	if (!ifs.is_open()) {
		cout << "文件不存在" << endl;
		//初始化属性
		this->m_EmpNum = 0;
		this->m_EmpArrary = NULL;
		//初始化文件是否为空
		this->m_FileIsEmpty = true;
		ifs.close();
		return;//直接return代码，不要在进行下面的初始化操作
	}
	
	//2.文件存在，并且没有记录
	char ch;
	ifs >> ch;
	if (ifs.eof()) {
		cout<<"文件为空！"<<endl;
		this->m_EmpNum = 0;
		this->m_EmpArrary = NULL;
		this->m_FileIsEmpty = true;
		ifs.close();
		return;
	}

	//3.当文件存在，并且记录了数据
	//统计文件中有多少人数的数据
	int num = this->get_EmpNum();
	//cout << "职工人数为：" << num << endl;
	this->m_EmpNum = num;
	//先开辟存放文件数据的数组，再文件初始化，将文件中的数据存放在数组空间中
	this->m_EmpArrary = new Worker*[this->m_EmpNum];
	this->init_Emp();

	测试代码
	//for (int i = 0; i < this->m_EmpNum; i++)
	//{
	//	cout << "职工编号：" << this->m_EmpArrary[i]->m_Id 
	//	 << "\t职工姓名：" << this->m_EmpArrary[i]->m_Name 
	//	 << "\t职工部门编号：" << this->m_EmpArrary[i]->m_Deptid << endl;
	//}
}



//析构函数空实现
WorkerManager::~WorkerManager() {

	if (this->m_EmpArrary != NULL) {
		for (int  i = 0; i < this->m_EmpNum; i++)
		{
			if (this->m_EmpArrary[i] != NULL) {//判断每个元素是否在堆区有，有的话也delete掉
				delete this->m_EmpArrary[i];
			}
		}

		//这里只把数组置空了
		delete[] this->m_EmpArrary;
		this->m_EmpArrary = 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.退出管理程序 ***************" << 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;
}

//退出菜单
void WorkerManager::exitSystem() {
	cout << "欢迎下次使用" << endl;
	system("pause");
	exit(0);
}


//添加员工
void WorkerManager::Add_Emp() {
	cout << "请输入添加的职工的数量" << 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];

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

		//添加新数据
		for (int i = 0; i < addNum; i++) {
			int id;
			string name;
			int dSelect;

			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 << "请输入第" << i + 1 << " 个新职工职位：" << 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;
			}

			newSpace[this->m_EmpNum + i] = worker;
		}

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

		//更改新空间
		this->m_EmpArrary = newSpace;
		this->m_EmpNum = newSize;

		this->m_FileIsEmpty = false;

		//添加成功后将数据保存到文件当中

		//提示添加成功
		cout << "成功添加 " << addNum << " 新员工";

		//保存数据
		this->save();

		//添加成功后按任意键清屏结束
		system("pause");
		system("cls");
	}
	else {
		cout<<"输入数据有误"<<endl;
	}
}

//保存数据
void WorkerManager::save() {
	ofstream ofs;
	ofs.open(FILENAME, ios::out);

	for (int i = 0; i < this->m_EmpNum; i++)
	{
		ofs << this->m_EmpArrary[i]->m_Id << " "
			<< this->m_EmpArrary[i]->m_Name << " "
			<< this->m_EmpArrary[i]->m_Deptid << " "
			<< endl;
	}

	ofs.close();
}

//统计文件中的人数
int WorkerManager::get_EmpNum() {
	ifstream ifs;
	ifs.open(FILENAME, ios::in);

	int id;
	string name;
	int did;

	int num = 0;

	while (ifs>>id&&ifs >> name&&ifs >> did) {
		//统计人数的变量
		num++;
	}

	return num;
}

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

	int id;
	string name;
	int did;

	//读取文件中的员工，并加载如存放worker对象的数组中
	int index = 0;
	while (ifs >> id && ifs >> name && ifs >> did) {
		Worker *worker = NULL;

		if (did == 1) { //普通员工
			worker = new Employee(id, name, did);
		
		}
		else if (did == 2) {
			worker = new Manager(id, name, did);
		}
		else{
			worker = new Boss(id, name, did);
		}

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

	//关闭文件
	ifs.close();
	
}

//显示职工
void WorkerManager::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 < this->m_EmpNum; i++)
		{
			//利用多态接口调用显示函数
			this->m_EmpArrary[i]->showInfo();
		}
	}

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

//删除职工
void WorkerManager::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;

		//判断编号是否存在
		int index = this->IsExist(id);

		if (index != -1) {//说明职工存在并且删除该位置的职工
			//数据前移
			for (int i = index; i < this->m_EmpNum-1; i++)
			{
				this->m_EmpArrary[i] = this->m_EmpArrary[i + 1];
			}
			//更新数组中记录人员个数
			this->m_EmpNum--;

			//将改变后的数据更新到文件当中
			this->save();

			cout << "删除成功！" << endl;
		}
		else {
			cout << "删除失败，未找到该职工。" << endl;
		}
	}

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

//判断职工是否存在,存在则返回职工在数组中的位置
int WorkerManager::IsExist(int id) {
	int index = -1;

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

			break;
		}
	}

	return index;
}

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

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

			delete this->m_EmpArrary[ret];

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

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

			cout << "请输入新姓名：" << 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:
				cout << "输入错误" << endl;
				break;
			}

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

			cout << "修改成功!" << this->m_EmpArrary[ret]->m_Deptid << endl;
			//保存文件
			this->save();
		}
	}
	//按任意键继续,清屏
	system("pause");
	system("cls");
}

//查找员工
void WorkerManager::Find_Emp()
{
	if (this->m_FileIsEmpty) {
		cout << "文件不存在" << endl;
	}
	else {
		cout<<"请输入查找文件的方式!"<<endl;
		cout << "1.按职工编号查找" << endl;
		cout << "2.按姓名查找" << endl;

		int select = 0;
		cin >> select;


		if (select == 1) {
			int id;
			cout << "请输入职工编号：" << endl;
			cin >> select;

			int ret = IsExist(select);
			if (ret != -1) {
				cout << "查找成功！该员工信息如下：" << endl;
				this->m_EmpArrary[ret]->showInfo();
			}
			else {
				cout << "查找失败!查无此人！";
			}
		}
		else if (select == 2) {
			string name;
			cout << "请输入查找人的姓名：" << endl;
			cin >> name;

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

					this->m_EmpArrary[i]->showInfo();
				}
			}

			if (flag == false) {
				cout << "查找失败!查无此人！" << endl;
			}
		}
		else {
			cout << "输入项有误！" << endl;
		}
	}

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

//排序职工 
void WorkerManager::Sort_Emp()
{
	if (this->m_FileIsEmpty) {
		cout << "文件不存在或记录为空!" << endl;
		system("pause");
		system("cls");
	}
	else {
		cout << "请输入排序方式:" << endl;
		cout << "1.按职工号升序" << endl;
		cout << "2.按职工号降序" << endl;
		
		int select = 0;
		cin >> select;

		for (int i = 0; i < this->m_EmpNum; i++)
		{
			int minOrmax = i;
			for (int j = i+1; j < m_EmpNum; j++)
			{
				if (select == 1) {//升序
					if (m_EmpArrary[minOrmax]->m_Id > m_EmpArrary[j]->m_Id) {
						minOrmax = j;
					}
				}
				else {//降序
					if (m_EmpArrary[minOrmax]->m_Id < m_EmpArrary[j]->m_Id) {
						minOrmax = j;
					}
				}
			}
			if (i != minOrmax) {
				Worker*temp = m_EmpArrary[i];
				m_EmpArrary[i] = m_EmpArrary[minOrmax];
				m_EmpArrary[minOrmax] = temp;
			}
		}

		cout << "排序成功！排序的成果为：" << endl;
		this->save();
		this->Show_Emp();
	}
}

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

	int select = 0;
	cin >> select;

	//把文件内的数据清空
	if (select == 1) {
		//打开模式ios::trunc如果存在删除文件并重新创建
		ofstream ofs(FILENAME, ios::trunc);
		ofs.close();
	}

	//把堆区的数组指针和数组各个元素清空
	if (this->m_EmpArrary != NULL) {
		for (int i = 0; i < this->m_EmpNum; i++)
		{
			if (this->m_EmpArrary[i] != NULL) {
				delete this->m_EmpArrary[i];
			}
		}

		this->m_EmpNum = 0;
		delete[] this->m_EmpArrary;
		this->m_EmpArrary = NULL;
		this->m_FileIsEmpty = true;
	}

	cout << "清空成功！" << endl;
	system("pause");
	system("cls");
}

标签：基于,职工,cout,int,void,多态,EmpArrary,include,id
来源： https://blog.csdn.net/weixin_41691735/article/details/121992876