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基基于多态的职工管理系统

殇感故事 2022-04-23 阅读 46
c++

效果

添加

 

 显示

删除

 

 

 查找

 排序(不演示了)

清空所有

 

头文件

员工类

#pragma once
#include <iostream>
#include <string>
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;
	//职工编号
	int m_Id;
	//职工姓名
	string m_Name;
	//部门编号
	int m_DeptId;
};

职员类

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

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

经理类

#pragma once
#include <iostream>
#include "worker.h"
using namespace std;
//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();
	//获取岗位名称
	virtual string getDeptName();
};

老板类

#pragma once
#include <iostream>
#include "worker.h"
using namespace std;
//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();
	//获取岗位名称
	virtual string getDeptName();
};

员工管理类

#pragma once
#include <iostream>
#include"worker.h"
#include"employee.h"
#include "manager.h"
#include "boss.h"
#include <fstream>
#define FILENAME "empFile.txt"

using namespace std;
class WorkerManager
{
public:
	//构造函数
	WorkerManager();
	//展示菜单
	void Show_Menu();

	//退出功能
	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();

	//显示职工
	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();
};

源文件

职员类

#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");
}

经理类

#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");
}

老板类

#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");
}

员工管理类

#include "workerManager.h"
WorkerManager::WorkerManager()//构造函数
{
	//1、文件不存在
	ifstream ifs;
	ifs.open(FILENAME,ios::in);//读文件
	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
		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
		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];
	//将文件中的数据,存到数组中
	this->init_Emp();

	测试代码
	//for (int i = 0; i < m_EmpNum; i++)
	//{
	//	cout << "职工号: " << this->m_EmpArray[i]->m_Id
	//		<< " 职工姓名: " << this->m_EmpArray[i]->m_Name
	//		<< " 部门编号: " << this->m_EmpArray[i]->m_DeptId << endl;
	//}
	
}
void WorkerManager::Show_Menu()//展示菜单
{
	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
		//新空间大小 = 原来记录人数+新增人数
		int newSize = this->m_EmpNum + addNum;
		//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;
			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 << "请输入该职工的岗位:" << 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: //普通员工
				worker = new Employee(id, name, 1);
				break;
			case 2: //经理
				worker = new Manager(id, name, 2);
				break;
			case 3:  //老板
				worker = new Boss(id, name, 3);
				break;
			default:
				break;
			}
			//将创建职工指针,保存到数组中
			newSpace[this->m_EmpNum + i] = worker;
		}
		//释放原有的空间
		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;

		//成功添加后 保存到文件中
		
		//提示添加成功
		cout<<"添加成功" <<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;
	}
	//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
	//将每个人的数据写入文件中
	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();
}

//统计文件中人数
int WorkerManager::get_EmpNum()
{
	ifstream ifs;
	ifs.open(FILENAME, ios::in);//打开文件-读
	 
	int id;
	string name;
	int dId;
	int num = 0;
	while (ifs >> id && ifs >> name && ifs >> dId)
	{
		//统计人数变量
		num++;
		
	}
	return num;
}

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

	int id;
	string name;
	int dId;

	int index = 0;
	while (ifs >> id && ifs >> name && ifs >> dId)
	{
		Worker* worker = NULL;
		//根据不同的部门Id创建不同对象
		if (dId == 1)  // 1普通员工
		{
			worker = new Employee(id, name, dId);
		}
		else if (dId == 2) //2经理
		{
			worker = new Manager(id, name, dId);
		}
		else //总裁
		{
			worker = new Boss(id, name, dId);
		}
		//存放在数组中
		this->m_EmpArray[index] = worker;
		index++;
	}
	//关闭文件
	ifs.close();
}

//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 << "请输入想要删除的职工号:" << 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
		{
			//数据前移
			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;
		}
	}

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

//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_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:
				break;
			}

			//更改数据 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;
		}
	}

	//按任意键 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、按姓名查找" << endl;

		int select = 0;
		cin >> select;


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

			int ret = IsExist(id);
			if (ret != -1)
			{
				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 << "请输入查找的姓名:" << endl;
			cin >> name;

			bool flag = false;  //查找到的标志
			for (int i = 0; i < m_EmpNum; i++)
			{
				if (m_EmpArray[i]->m_Name == name)
				{
					cout << "查找成功,职工编号为:"
						<< m_EmpArray[i]->m_Id
						<< " 号的信息如下:" << endl;

					flag = true;

					this->m_EmpArray[i]->showInfo();
				}
			}
			if (flag == false)
			{
				//查无此人
				cout << "查找失败,查无此人" << endl;
			}
		}
		else
		{
			cout << "输入选项有误" << 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 << "请选择排序方式: " << endl;
		cout << "1、按职工号进行升序" << endl;
		cout << "2、按职工号进行降序" << endl;

		int select = 0;
		cin >> select;


		for (int i = 0; i < m_EmpNum; i++)
		{
			int minOrMax = i;
			for (int j = i + 1; j < m_EmpNum; j++)
			{
				if (select == 1) //升序
				{
					if (m_EmpArray[minOrMax]->m_Id > m_EmpArray[j]->m_Id)
					{
						minOrMax = j;
					}
				}
				else  //降序
				{
					if (m_EmpArray[minOrMax]->m_Id < m_EmpArray[j]->m_Id)
					{
						minOrMax = j;
					}
				}
			}

			if (i != minOrMax)
			{
				Worker* temp = m_EmpArray[i];
				m_EmpArray[i] = m_EmpArray[minOrMax];
				m_EmpArray[minOrMax] = temp;
			}

		}

		cout << "排序成功,排序后结果为:" << endl;
		this->save();
		this->Show_Emp();
	}

}

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

	int select = 0;
	cin >> select;

	if (select == 1)
	{
		//清空文件
		//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();

		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");
}
WorkerManager::~WorkerManager()//析构函数
{
	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;
	}

}

主函数

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

int main()
{

	WorkerManager wm;
	
	int choice = 0;//用来存储用户的选项
	while (true)
	{
		//调用展示菜单的成员函数
		wm.Show_Menu();

		cout<<"请输入您的选择:" << endl;
		cin >> choice;//接受用户的选项

		switch (choice)
		{
		case 0://退出系统
			wm.ExitSystem();
			break;
		case 1://增加职工
			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://清空文档
			wm.Clean_File();
			break;
		default:
			break;
		}
	}


	system("pause");

	return 0;
}
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