利用C++实现基于多态的职工管理系统。
系统需求:
公司员工分为三种:普通员工,经理,老板。
显示信息时要显示职工编号,职工姓名,职工岗位,以及职责。
管理系统需要实现的功能如下:
- 退出管理系统
- 增加职工信息
- 显示职工信息
- 删除离职员工
- 修改职工信息
- 查找职工信息
- 按照编号排序
- 清空所有文档
boos.h
#pragma once
#include<iostream>
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();
//显示岗位名称
virtual string getDeptName();
};
employee.h
#pragma once
#include<iostream>
using namespace std;
#include"worker.h"
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();
//显示岗位名称
virtual string getDeptName();
};
manage.h
#pragma once
#include<iostream>
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();
//显示岗位名称
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;
//显示岗位名称
virtual string getDeptName() = 0;
int m_Id;
string m_Name;
int m_DeptId;
};
workermanager.h
#pragma once //防止文件重复包含
#include<iostream>
#include"worker.h"
using namespace std;
#include"employee.h"
#include"manage.h"
#include"boss.h"
#include"fstream"
#define FILENAME "empFile.txt"
class WorkerManager
{
public:
WorkerManager(); //构造函数
void Show_Menu(); //显示菜单
void ExitSystem(); //退出系统
int m_EmpNum; //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; //判断文件是否为空
int get_EmpNum(); //统计文件中的人数
void init_Emp(); //初始化员工
void Show_Emp(); //显示职工
int IsExist(int id); //判断职工是否存在
void Del_Emp(); //删除职工
void Mod_Emp(); //修改职工
void Find_Emp(); //查找职工
void Sort_Emp(); //排序
void Clean_File(); //清空文件
~WorkerManager(); //析构函数
};
boss.cpp
#include "boss.h"
//构造函数
Boss::Boss(int id, string name, int dId)
{
this->m_Name = name;
this->m_Id = id;
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:带领公司走向辉煌" << endl;
}
//显示岗位名称
string Boss::getDeptName()
{
return string("老板");
}
employee.cpp
#include"employee.h"
//构造函数
Employee::Employee(int id, string name, int dId)
{
this->m_Name = name;
this->m_Id = id;
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;
}
//显示岗位名称
string Employee::getDeptName()
{
return string("员工");
}
manage.h
#include"manage.h"
//构造函数
Manager::Manager(int id, string name, int dId)
{
this->m_Name = name;
this->m_Id = id;
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:完成老板交付的任务,并给普通员工下发任务" << endl;
}
//显示岗位名称
string Manager::getDeptName()
{
return string("经理");
}
workermanager.cpp
#include"WorkerManager.h"
WorkerManager::WorkerManager()
{
//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())
{
//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
this->m_EmpArray = new Worker * [this->m_EmpNum];
//将文件的主句存放再数组中
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
<< "姓名:" << this->m_EmpArray[i]->m_Name
<< "部门编号:" << this->m_EmpArray[i]->m_DeptId << endl;
}*/
}
//显示界面
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;
}
//退出功能
void WorkerManager::ExitSystem()
{
cout << "欢迎下次使用" << endl;
system("pause");
exit(0);
}
//添加职工
void WorkerManager::Add_Emp()
{
cout << "请输入添加职工数量" << endl;
int addNum = 0;
cin >> addNum;
if (addNum > 0)
{
//计算添加新空间的大小
int newSize = this->m_EmpNum + addNum; //原来记录人数+新增加人数
//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_EmpArray != NULL)
{
for (int i = 0; i < this->m_EmpNum; i++)
{
newSpace[i] = this->m_EmpArray[i];
}
}
//批量添加数据
for (int i = 0; i < addNum; i++)
{
int id;
string name;
int dSelete; //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 >> dSelete;
Worker* worker = NULL;
switch (dSelete)
{
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);
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;
//更新职工人数
this->m_EmpNum = newSize;
//更新职工不为空标志
this->m_FileIsEmpty = false;
cout << "成功添加" << addNum << "名新职工" << endl;
//保存数据到文件中
this->save();
}
else
{
cout << "输入数据有误" << endl;
}
system("pause");
system("cls");
}
//保存文件
void WorkerManager::save()
{
ofstream ofs;
ofs.open(FILENAME, ios::out); //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();
}
//统计文件中的人数
int WorkerManager::get_EmpNum()
{
ifstream ifs;
ifs.open(FILENAME, ios::in); //读文件
int id;
string name;
int dId;
int num=0;
while (ifs >> id && ifs >> name && ifs >> dId)
{
//统计人数
num++;
}
return num;
}
//初始化员工
void WorkerManager::init_Emp()
{
ifstream ifs;
ifs.open(FILENAME, ios::in); //读文件
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 if (dId == 3) //老板
{
worker = new Boss(id, name, dId);
}
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 < this->m_EmpNum; i++)
{
//利用多态调用程序接口
this->m_EmpArray[i]->showInfo();
}
}
system("pause");
system("cls");
}
//判断职工是否存在
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
{
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) //职工存在
{
for (int i = index; i < this->m_EmpNum - 1; i++)
{
this->m_EmpArray[i] = this->m_EmpArray[i + 1];
}
this->m_EmpNum--; //更新数组中记录的人员个数
this->save(); //数据同步更新
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 << "请输入要修改的职工编号:" << endl;
int id = 0;
cin >> id;
int ret = this->IsExist(id);
if (ret != -1)
{
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, 1);
break;
case 2:
worker = new Manager(newId, newName, 2);
break;
case 3:
worker = new Boss(newId, newName, 3);
default:
break;
}
//更新数据到数组中
this->m_EmpArray[ret] = worker;
cout << "修改成功" << endl;
this->save();
}
else
{
cout << "修改失败,查无此人!" << endl;
}
}
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)
{
//按编号查找
int id;
cout << "请输入查找的编号" << 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;
//加入判断是否查到的标志
bool flag = false; //默认未找到
for (int i = 0; i < m_EmpNum; i++)
{
if (this->m_EmpArray[i]->m_Name == name)
{
cout << "查找成功!"<< endl<<this->m_EmpArray[i]->m_Id
<< "号职工信息为:" << 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 << "输入的选项有误!" << endl;
}
}
system("pause");
system("cls");
}
//排序
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,按照职工编号升序:" << endl;
cout << "2,按照职工编号降序:" << endl;
int select = 0;
cin >> select;
for (int i = 0; i < m_EmpNum; i++)
{
int minORmax = i;
for (int j = i+1; j < this->m_EmpNum; j++)
{
if (select == 2) //降序
{
if (this->m_EmpArray[minORmax]->m_Id < this->m_EmpArray[j]->m_Id)
{
minORmax = j;
}
}
else //默认升序
{
if (this->m_EmpArray[minORmax]->m_Id > this->m_EmpArray[j]->m_Id)
{
minORmax = j;
}
}
}
//实现交换
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!" << endl;
cout << "排序后的结果为:" << 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;
if (select == 1)
{
//清空文件
ofstream ofs(FILENAME, ios::trunc); //删除文件后重新创造
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()
{
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;
}
}
职工管理系统.cpp
#include<iostream>
#include"WorkerManager.h"
using namespace std;
#include"worker.h"
//#include"employee.h"
//#include"manage.h"
//#include"boss.h"
int main()
{
//测试代码
/*Worker * worker = NULL;
worker = new Employee(1, "张三", 1);
worker->showInfo();
delete worker;
worker = new Manager(2, "李四", 2);
worker->showInfo();
delete worker;
worker = new Boss(3, "王五", 3);
worker->showInfo();
delete worker;*/
//实例化管理者对象
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
wm.Add_Emp();
break;
case 2://显示
wm.Show_Emp();
break;
case 3://删除
wm.Del_Emp();
break;
case 4://修改
wm.Mod_Emp();
break;
case 5://查找
wm.Find_Emp();
break;
case 6://排序
wm.Sort_Emp();
break;
case 7://清空
wm.Clean_File();
break;
default:
system("cls");
break;
}
}
system("pause");
return 0;
}