职工管理系统（c++）

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"worker.h"
#include<fstream>
#define FILENAME "empfise.txt"
using namespace std;   //标准命名空间

class workermanager
{
public:
	workermanager();   //构造函数
	
	void showmenu();    //展示菜单

	void exitsystem();  //退出系统

	int m_empnum = 0;   //记录职工人数

	worker ** m_emparray;  //职工数组指针

	void add_emp();   //添加职工
	 
	void save();    //保存文件

	bool m_fileisempty;   //判断是否为空

	int get_empnum();//统计文件中人数

	void init_emp();//初始化员工

	void show_emp();//显示职工

	void del_emp();//删除职工

	int isexist(int id);//判断职工是否存在，如果存在返回职工在数组中的位置，不存在返回-1
	
	void mod_emp();//修改职工

	void find_emp();//查找职工

	void sort_emp();//排序职工

	void clean_file();//清空文件

	~workermanager();    //析构函数
};

worker.h

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

class worker
{
public:
	virtual void showif() = 0;   //显示个人信息
	virtual string showdepart() = 0;   //获取岗位名称
	virtual string showrespons() = 0;   //获取职责
	string w_name;
	int w_id;
	int w_did;
};

manager.h

#pragma once
#include"worker.h"
class manager :public worker
{
public:
	manager(int id, string name, int did);   //构造函数
	virtual void showif();   //显示个人信息
	virtual string showdepart();   //获取岗位名称
	virtual string showrespons();   //获取职责
};

employee.h

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

class employee :public worker
{
public:
	employee(int id,string name,int did);   //构造函数
	virtual void showif();   //显示个人信息
	virtual string showdepart();   //获取岗位名称
	virtual string showrespons();   //获取职责
};

boss.h

#pragma once
#include"worker.h"
class boss :public worker
{
public:
	boss(int id, string name, int did);   //构造函数
	virtual void showif();   //显示个人信息
	virtual string showdepart();   //获取岗位名称
	virtual string showrespons();   //获取职责
};

manager.cpp

#include"manager.h"
manager::manager(int id, string name, int did)
{
	this->w_name = name;
	this->w_id = id;
	this->w_did = did;
}
void manager::showif()
{
	cout << "职工编号：" << this->w_id
		<< "\t职工姓名: " << this->w_name
		<< "\t职工岗位: " << this->showdepart()
		<< "\t职工职责:" << this->showrespons()
		<< endl;
}
string manager::showdepart()
{
	return string("经理");
}
string manager::showrespons()
{
	return string("完成老板交给的任务，并且下发任务");
}

employee.cpp

#include"employee.h"

employee::employee(int id, string name, int did)
{
	this->w_id = id;
	this->w_name = name;
	this->w_did = did;
}
void employee::showif()
{
	cout << "职工编号：" << this->w_id
		<< "\t职工姓名: " << this->w_name
		<< "\t职工岗位: " << this->showdepart()
		<< "\t职工职责:" <<this->showrespons()
		<< endl;
}
string employee::showdepart()
{
	return string("员工");
}
string employee::showrespons()
{
	return string( "完成经理交给的任务");
}

boss.cpp

#include"boss.h"
boss::boss(int id, string name, int did)
{
	this->w_name = name;
	this->w_id = id;
	this->w_did = did;
}
void boss::showif()
{
	cout << "职工编号：" << this->w_id
		<< "\t职工姓名: " << this->w_name
		<< "\t职工岗位: " << this->showdepart()
		<< "\t职工职责:" << this->showrespons()
		<< endl;
}
string boss::showdepart()
{
	return string("老板");
}
string boss::showrespons()
{
	return string("管理公司所有事务");
}

workermanager.cpp

#include"workermanager.h"
#include<string>
#include"boss.h"
#include"employee.h"
#include"manager.h"

workermanager::workermanager()
{
	//情况1：文件不存在
	ifstream ifs;
	ifs.open(FILENAME, ios::in);  //读文件
	if (!ifs.is_open())  //没有打开成功
	{
		cout << "文件不存在!" << endl;
		//初始化属性
		this->m_empnum = 0;   //初始化人数
		this->m_emparray = NULL;   //初始化数组指针
		this->m_fileisempty = true;   //初始化文件是否为空
		ifs.close();
		return;
	}

	//情况2.文件存在但为空
	char ch;
	ifs >> ch;
	if (ifs.eof())
	{
		//文件为空
		cout << "文件为空!" << endl;
		//初始化属性
		this->m_empnum = 0;   //初始化人数
		this->m_emparray = NULL;   //初始化数组指针
		this->m_fileisempty = true;   //初始化文件是否为空
		ifs.close();
		return;
	}
	
	//情况3.当文件存在并且也记录数据
	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
	/*for (int i = 0; i < this->m_empnum; i++)
	{
		cout << "职工编号：" << this->m_emparray[i]->w_id << " 姓名：" << this->m_emparray[i]->w_name<< " 部门：" << this->m_emparray[i]->w_did<<endl;
	}*/

}

void workermanager::showmenu()
{
	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.删除离职员工*******" << 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;
}
void workermanager::exitsystem()
{
	cout << "欢迎下次使用" << endl;
	system("pause");
	exit(0);   //退出程序
}

void workermanager::add_emp()
{
	cout << "请输入添加职工的数量：" << endl;
	int addnum = 0;
	cin >> addnum;
	if (addnum > 0)
	{
		//添加
		//计算添加空间大小
		int newsize = this->m_empnum + addnum;  //新空间人数=原来人数+新增人数
		//开辟新空间
		worker** newspace=new worker*[newsize];
		//将原来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;    //编号
			string name;    //姓名
			int dselect;    //岗位选择

			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:
					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;
			}
			//将创造的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 << "名职工！" << endl;
		//******************保存数据到文件中******************
		this->save();

	}
	else
	{
		cout << "数据有误" << endl;
	}
	system("pause");
	system("cls");
}

void workermanager::save()
{
	ofstream ofs;
	ofs.open(FILENAME, ios::out);  //用输出的方式打开——写文件

	//将每个人的数据写入文件
	for (int i=0;i<this->m_empnum;i++)
	{
		ofs << this->m_emparray[i]->w_id << " "
			<< this->m_emparray[i]->w_name << " "
			<< this->m_emparray[i]->w_did << 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
	int id;
	string name;
	int did;
	int num = 0;
	while (ifs>>id &&ifs>>name&&ifs>>did)
	{
		num++;
	}
	return num;
}
void workermanager::init_emp()
{
	ifstream ifs;
	ifs.open(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)
		{
			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_emparray[index] = worker;
		index++;
	}
	ifs.close();
}

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++)
		{
			//利用多态调用程序接口
			this->m_emparray[i]->showif();
		}
	}
	//按任意键清屏
	system("pause");
	system("cls");
}

void workermanager::del_emp()//删除职工
{
	if (this->m_fileisempty)
	{
		cout << "文件不存在或记录为空" << endl;
	}
	else
	{
		//按照职工编号删除职工
		cout << "请输入要删除的职工编号:" << endl;
		int id = 0;
		cin >> id;
		int index = this->isexist(id);
		if (index!=-1) //说明职工存在，并且要删除掉index位置上的职工
		{
			for (int i=index;i<this->m_empnum-1;i++)
			{
				this->m_emparray[i] = this->m_emparray[i + 1];
			}
			this->m_empnum--;//更新人员个数
			//同步更新到文件中
			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");
}


int workermanager::isexist(int id)//判断职工是否存在，如果存在返回职工在数组中的位置，不存在返回-1
{
	int index = -1;
	for (int i = 0; i < m_empnum; i++)
	{
		if (this->m_emparray[i]->w_id == id)
		{
			index = i;
			break;
		}
	}
	return index;
}

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 << "已查到： " << id << "号职工，请输入新的职工号：" << 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 << "2.经理" << endl << "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");
}

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
		{
			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 << "该职工的信息如下：" << endl;
				this->m_emparray[ret]->showif();
			}
			else
			{
				cout << "查无此人" << endl;
			}
		}
		else if (select == 2)  //按姓名查
		{
			string name;
			cout << "请输入查找的职工姓名：" << endl;
			cin >> name;
			bool flag = false; //加入判断标志，默认没找到
			for (int i = 0; i < this->m_empnum; i++)
			{
				if (this->m_emparray[i]->w_name == name)
				{
					cout << "查找成功,职工的编号为： " << this->m_emparray[i]->w_id << " 号职工的信息如下：" << endl;
					flag = true;
					this->m_emparray[i]->showif();
				}
			}
			if (flag == false)
			{
				cout << "查找失败，查无此人！" << endl;
			}
		}
		else
		{
			cout << "输入有误！" << endl;
		}
		//按任意键清屏
		system("pause");
		system("cls");
	}
}

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<< "1.按职工号升序" << endl << "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; //最小值或最大值下标
		for (int j=i+1;j<this->m_empnum;j++)
		{
			if (select == 1)//升序
			{
				if (this->m_emparray[minormax]->w_id > this->m_emparray[j]->w_id)
				{
					minormax = j;
				}
			}
			else  //降序
			{
				if (this->m_emparray[minormax]->w_id < this->m_emparray[j]->w_id)
				{
					minormax = j;
				}
			}
		}
		//判断一开始认定的最小值或最大值是不是计算的最小值或最大值，如果不是，交换数据
		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！排序后的结果为： " << endl;
	this->save();
	this->show_emp();
}

void workermanager::clean_file()
{
	cout << "确定清空？" << endl;
	cout << "1.确认" << endl;
	cout << "2.返回" << endl;
	int select = 0;
	cin >> select;
	if (select == 1)
	{
		//清空文件
		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");
}

workermanager::~workermanager()
{

}

职工管理系统.cpp

#include<iostream>
#include"workermanager.h"
#include"worker.h"
#include"employee.h"
#include"manager.h"
#include"boss.h"
using namespace std;


int main()
{
	//实例化管理者对象
	workermanager wm;
	
	int choice = 0;
	
	while (true)
	{
		wm.showmenu(); //展示菜单
		cout << "请输入您的选择" << endl;
		cin >> choice;   //接受选项
		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:
				system("cls");  //清屏
				break;
		}
	}

	system("pause");
	return 0;
}