[C++知识库]C++:职工管理系统

职工管理系统.cpp

#include<iostream>
#include "workManager.h"
#include "worker.h"
#include "employee.h"
#include "manager.h"
#include "boss.h"
using namespace std;
int main()
{
	测试代码
	//worker * wk = NULL;
	//wk = new Employee(1, "张三", 1);
	//wk->showInfo();
	//delete wk;

	//wk = new Manager(2, "李四", 1);
	//wk->showInfo();
	//delete wk;

	//wk = new Boss(3, "王五", 1);
	//wk->showInfo();
	//delete wk;


	//实例化管理者对象
	workManager wm;
	int choose = 0;
	while (true)
	{
		wm.Show_Menu();
		cout << "请输入您的选择:	" << endl;
		cin >> choose;

		switch (choose)
		{
		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;
}

workManager.cpp

#include "workManager.h"

workManager::workManager()
{
	//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;
		//记入职工人数
		this->m_EmpNum = 0;

		//职工数组指针
		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())
	{
		//cout << "文件为空！" << endl;
		//记入职工人数
		this->m_EmpNum = 0;

		//职工数组指针
		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，将文件中的数据，存到数组中
	this->m_EmpArray = 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_EmpArray[i]->m_Id
	//		<< "\t职工姓名： " << this->m_EmpArray[i]->m_Name
	//		<< "\t部门编号： " << this->m_EmpArray[i]->m_DeptId << endl;
	//}
	
}

//清空文件
void workManager::Clean_File()
{
	cout << "确定清空？ " << endl;
	cout << "1、确定" << endl;
	cout << "2、返回" << endl;
	int select;
	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)
		{
			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::~workManager()
{
	if (this->m_EmpArray != NULL)
	{
		delete[]m_EmpArray;
		this->m_EmpArray = NULL;
	}

}

//显示菜单
void workManager::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;
}

//添加职工
void workManager::add_Emp()
{
	cout << "请输入添加职工的数量：" << endl;
	int addNum = 0;
	cin >> addNum;
	if (addNum > 0)
	{
		//计算新空间大小
		int newSize = 0;
		newSize = this->m_EmpNum + addNum;

		worker** newSpace = new worker * [newSize];
		//将原来空间下的数据拷贝到新空间
		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 j = 0; j < addNum; j++)
		{
			int id;//职工编号
			string name;//职工姓名
			int dSelect;//部门选择

			cout << "请输入第 " << j + 1 << " 个新职工编号： " << endl;
			cin >> id;
			cout << "请输入第 " << j + 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* work = NULL;
			switch (dSelect)
			{
			case 1:
				work = new Employee(id, name, dSelect);
			case 2:
				work = new Manager(id, name, dSelect);
			case 3:
				work = new Boss(id, name, dSelect);
			default:
				break;
			}
			newSpace[this->m_EmpNum + j] = work;
		}
		//释放原有空间
		delete[]this->m_EmpArray;
		//更改新空间的指向
		this->m_EmpArray = newSpace;
		//更新新职工的人数
		this->m_EmpNum = newSize;
		//更新职工不为空
		this->m_FileIsEmpty = false;
		//提示添加成功
		cout << "成功添加" << addNum << "名新职工" << endl;
		//保存文件
		this->Save();
		system("pause");
		system("cls");

	}
	else
	{
		cout << "输入有误" << endl;
	}

}

//保存职工信息
void workManager::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
	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 workManager::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  workManager::Init_Emp()
{
	ifstream ifs;
	ifs.open(FILENAME, ios::in);//打开文件 读

	int id;
	string name;
	int dId;
	int num = 0;
	int index = 0;
	while (ifs >> id && ifs >> name && ifs >> dId)
	{
		worker* work = NULL;
		if (dId == 1)//普通员工
		{
			work = new Employee(id, name, dId);
		}
		else if (dId == 2)//经理
		{
			work = new Manager(id, name, dId);
		}
		else//老板
		{
			work = new Boss(id, name, dId);
		}
		this->m_EmpArray[index] = work;
		index++;
	}
	//关闭文件 
	ifs.close();
}

//显示职工
void workManager::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]->showInfo();
		}
	}

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

//删除职工
void workManager::Del_Emp()
{
	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
		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)//说明职工存在
		{
			//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--;//更新员工人数
			//数据同步更新到文件中
			this->Save();
			cout << "删除成功 " << endl;
		}
		else
		{
			cout << "删除失败，未找到该职工" << endl;
		}
	}
	//按任意键后清屏
	system("pause");
	system("cls");
}

//判断职工是否存在 如果存在返回职工所在数组的位置，不存在返回-1
int workManager::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 workManager::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* work = NULL;
			switch (dSelect)
			{
			case 1:
				work = new Employee(newId, newName, dSelect);
			case 2:
				work = new Manager(newId, newName, dSelect);
			case 3:
				work = new Boss(newId, newName, dSelect);
			default:
				break;
			}

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

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

//查找职工
void workManager::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、按照职工编号查找 " << endl;
		cout << "2、按照职工姓名查找 " << 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)
			{
				//该找到职工
				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)
		{
			//按照姓名查
			string name;
			cout << "请输入查找的姓名：" << endl;
			cin >> name;
			bool flag = false;
			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：" << m_EmpArray[i]->m_Id 
						<<"号职工信息如下："<< endl;

					this->m_EmpArray[i]->showInfo();
					flag = true;
				}
			}
			if (flag == false)
			{
				cout << "查找失败，查无此人！" << endl;
			}

		}
		else
		{
			cout << "输入选项有误" << endl;
		}
	}

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

//按照编号排序
void workManager::Sort_Emp()
{
	if (this->m_FileIsEmpty)
	{
		cout << "文件不存在或记录为空！ " << endl;
		//按任意键后清屏
		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;//声明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]->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小值或者最大值是不是计算出的最小值或者最大值
			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！排序后的结果为： " << endl;
	this->Save();
	this->Show_Emp();
}

//退出系统
void workManager::ExitSystem()
{
	cout << "欢迎下次使用" << endl;
	system("pasue");
	exit(0);

}

workManager.h

#pragma once         //防止头文件重复包含
#include<iostream>   //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<string>
#include<fstream>
#define FILENAME  "empFile.txt"

class workManager
{
public:
	//构造函数
	workManager();

	//显示菜单
	void Show_Menu();

	//退出系统
	void ExitSystem();


	//析构函数
	~workManager();

	//记入职工人数
	int m_EmpNum;

	//职工数组指针
	worker** m_EmpArray;

	//添加职工
	void add_Emp();

	//文件是否为空
	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();

	//判断职工是否存在 如果存在返回职工所在数组的位置，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();

	//保存职工信息
	void Save();




};

manager.cpp

#include"manager.h"
//Manager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" << endl;
}

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

manager.h

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#pragma once
#include<iostream>
#include<string>
#include "worker.h"
using namespace std;
class Manager:public worker
{
public:
	//Manager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();


};

employee.cpp

#include "employee.h"

//Employee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");
}

employee.h

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//普通职工类
#pragma once
#include<iostream>
#include<string>
#include "worker.h"
using namespace std;

class Employee :public worker
{
public:
	//Employee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();


};

boss.cpp

#include"boss.h"
//Boss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： 管理公司所有的事物" << endl;
}

//获取岗位名称
string Boss::getDeptName()
{
	return string("老板");
}

boss.h?

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#pragma once
#include<iostream>
#include<string>
#include "worker.h"
using namespace std;
class Boss :public worker
{
public:
	//Manager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();


};

worker.h

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

//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;

	

};

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