管理系统需求
职工管理系统可以用来管理公司内所有员工的信息本教程主要利用C++来实现一个基于多态的职工管理系统
公司中职工分为三类 : 普通员工、经理、老板,显示信息时,需要显示职工编号、职工姓名、职工岗位、以及职责
普通员工职责:完成经理交给的任务
经理职责 : 完成老板交给的任务,并下发任务给员工
老板职责 : 管理公司所有事务
管理系统中需要实现的功能如下 :
退出管理程序 : 退出当前管理系统
增加职工信息 : 实现批量添加职工功能,将信息录入到文件中,职工信息为:职工编号、姓名、部门编号
显示职工信息 : 显示公司内部所有职工的信息
删除离职职工 : 按照编号删除指定的职工
修改职工信息:照编号修改职工个人信息
查找职工信息 : 按照职工的编号或者职工的姓名进行查找相关的人员信息
按照编号排序 : 按照职工编号,进行排序,排序规则由用户指定
清空所有文档 : 清空文件中记录的所有职工信息(清空前需要再次确认,防止误删)*/
首先创建管理类
与用于的沟通菜单界面
对职工增删改查操作
与文件的读写交互
#include<iostream>
#include<string>
#inculde<fstream>
using namespace std;
#include"workerManager.h"
#include"boss.h"
#include"employee.h"
#include"manager.h"
int main()
{
}
与用户的沟通菜单界面
#pragma once
#include<iostream>
using namespace std;
#include"worker.h"
#include"employee.h"
#include"boss.h"
#include"manager.h"
#include<fstream>
#define FILENAME "empfile.txt"
//workerManger.h
class workerManger
{
public:
void Show_Menu;
void exitSystem;
};
//workerManger.cpp
void workerManger::Show_Menu()
{
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.删除职工信息 *****" << 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 workerManger::exitSystem()
{
cout << "欢迎下次使用" << endl
system("cls");
exit(0); // 只要调用这个函数程序就退出
}
接着我们再看增加职工信息,首先我们要将普通员工、经理、老板抽象出来一个类,然后上述三个子类继承一个父类。
三种职工抽象到一个类worker中,利用多态管理不同的职工种类
职工属性:职工编号、职工姓名、职工所在部门编号
职工行为:岗位职责信息描述、获取岗位名称
//worker.h
class worker
{
public:
virtual void showInfo() = 0 ;//显示信息
virtual string m_DepltId() = 0; // 获取岗位名称
string m_name;
int m_id;
int m_DeptId;
};
//employee.h
class employee:public worker
{
public:
employee(string name ; int id ; int did);
void showInfo();
string m_DepltId();
};
//employee.cpp
#include"employee.h"
employee::employee(string name ; int id ; int did)
{
this->m_name = name ;
this->m_ID = id;
this->m_DeptId = did;
}
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;
}
string employee::m_DepltId()
{
return "员工";
}
//manager.h
class manager:public workerManger
{
public:
employee(string name ; int id ; int did);
void showInfo();
string m_DepltId();
};
//manager.cpp
#include"manager.h"
employee::manager(string name ; int id ; int did)
{
this->m_name = name ;
this->m_ID = id;
this->m_DeptId = did;
}
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:完成经理交给的任务" << endl;
}
string manager::m_DepltId()
{
return "经理";
}
//boss.h
#include"worker.h"
class Boss :public Worker
{
public:
Boss(int id , string name , int did);
virtual void showInfo();
//获取岗位名称
virtual string getDeptName();
};
//boss.cpp
#include"boss.h"
Boss::Boss(int id, string name, int did)
{
this->m_ID = id;
this->m_name = name;
this->m_DeptId = did;
}
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:管理公司所有业务" << endl;
}
//获取岗位名称
string Boss::getDeptName()
{
return string("总裁");
}
接下来是添加职工功能
//在管理员中加入添加职工功能的函数
//workermanager.h
class workerManger
{
public:
workerManger();
~workerManager();
void Show_Menu();
void exitSystem();
void Add_Emp();
bool m_FileIsEmpty;
init_Emp();//写入文件操作
int get_Num();
int IsExist();
void save();
int m_EmpNum;//职工人数
Worker** m_EmpArry;//职工数组指针
};
//workermanager.cpp
#define FILENAME "empfile.txt"
workerManger::workerManger()
{
this->m_EmpNum = 0;
this->m_EmpArry = NULL;
ifstream ifs;
ifs.open(FILENAME , ios::in); // 读入文件
if (!ifs.is_open())
{
cout << "文件不存在" << endl;
//初始化属性
this->m_EmpNum = 0;
this->m_FileIsEmpty = true;
this->m_EmpArry = NULL;
this->m_FileIsEmpty = true;
ifs.close();
return ;
}
//分三种情况 , 文件不存在 , 文件存在但被清空无数据 , 文件存在
//文件存在但被清空
char ch;
ifs >> ch ;
if(ifs.eof())
{
cout << "文件为空!" << endl;
this->m_EmpNum = 0;
this->m_FileIsEmpty = true;
this->m_EmpArry = NULL;//初始化数组指针
ifs.close();
return;
}
//文件存在
int num = this->get_Num();
this->Emp_Num = num ;
//根据职工数创建数组 //开辟空间
this->m_EmpArry = new Worker * [this->m_EmpNum];
this->init_Emp();
}
workerManger::~workerManager()
{
if(this->m_EmpArry != NULL)
{
for (int i = 0; i < m_EmpNum; i++)
{
if (this->m_EmpArry[i] != NULL)
{
delete this->m_EmpArry[i]; // 删除每个位置的堆区数据
}
}
delete[] this->m_EmpArry;
this->m_EmpArry = NULL;//堆区内存要释放
}
}
void workerManger::Add_Emp()
{
cout << "请选择要添加的员工数量" << endl;
int addnum = 0 ;
cin >> a ;
if ( a < 0 )
{
cout << "输入的信息有误" << endl;
}
else
{
int newsize = this->m_EmpNum + addnum ;
Worker** newSpace = new Worker* (newsize);
//将旧数据写到新的空间中
if(this->m_EmpNum != NULL)
{
for (int i = 0; i < this->m_EmpNum; i++)
{
newSpace[i] = this->m_EmpArry[i];
}
}
for(int i = 0 ; i < addnum ; i ++ )
{
int id = 0 ;
int did = 0 ;
string name = "";
int dSelect = 0;
cout << "请输入第" << i + 1 << "个新职工编号:" << endl;
cin >> id;
if (this->IsExist(id) != -1) //判断编号是否存在
{
cout << "员工编号已经存在,请勿重复添加" << endl;
break;
}
else
{
cout << "请输入第" << i + 1 << "个新职工姓名:" << endl;
cin >> name;
cout << "选择该职工的岗位" << endl;
cout << "1、普通员工" << endl;
cout << "2、经理" << endl;
cout << "3、总裁" << endl;
cin >> dSelect;
Worker* worker = NULL;
switch(dSelect)
{
case 1:
worker = new employee(name , id , 1);
break;
case 2:
worker = new manager(name , id , 2);
break;
case 3:
worker = new boss(name , id , 3);
break;
}
newSpace[this->m_EmpNum + i ] = worker;
delete[] this->m_EmpArry;
this->FileIsEmpty = false ;
this->m_EmpArry = newSpace ;
this->m_EmpNum = newsize;
save();
cout << "添加成功" << addNum << "名新职工!" << endl;
}
}
}
}
int workerManger::get_Num()
{
ifstream ifs;
ifs.open(FILENAME, ios::in);
int id; // 用于存储
string name; // 用于存储
int did; // 用于存储
int num = 0; // 计数
while (ifs >> id && ifs >> name && ifs >> did)
{
num++;
}
ifs.close();
return num;
}
void workerManger::init_Emp()
{
ofstream ofs ;
ofs.open(FILENAME , ios::out);
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);
}
//存放在数组中
this->m_EmpArry[index] = worker;
index++;
}
ifs.close();
}
int workerManger::IsExist()
{
int index = -1;//先默认不存在
for (int i = 0; i < this->m_EmpNum; i++)
{
if (this->m_EmpArry[i]->m_ID == id)
{
index = i;
break;
}
}
return index;
}
void workerManger::save()
{
ofstream ofs ;
ofs.open(FILENAME , ios::out);
for(int i = 0 ; i < m_EmpNum ; i++)
{
ofs << this->m_EmpArry[i]->m_ID << " " << this->m_EmpArry[i]->m_name
<< " " << this->m_EmpArry[i]->m_DeptId << endl;
}
ofs.close();
}
上述便是添加职工 和 相应的其他功能的代码实现,添加员工这边应该算是这个模块中最难理解的部分了。
显示职工信息
void show_Emp;
void 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++)
{
this->m_EmpArry[i].showinfo();
}
}
system("pause");
system("cls");
}
删除离职职工
void Del_Emp();
void Del_Emp()
{
if (this->m_FileIsEmpty)
{
cout << "文件不存在或记录为空" << endl;
}
else
{
cout<< "请输入要删除员工的id" << endl;
int id = 0;
cin >> id ;
int index = this->IsExist(id);
if(index != -1)
{
for(int i = index ; i < this->EmpNum ; i++ )
{
this->EmpArry[i] = this -> EmpArry[i+1];
}
this->EmpNum--;
this->save();
cout << "删除成功" << endl;
}
else
{
cout << "删除失败,员工不存在" << endl;
}
}
}
修改职工信息:照编号修改职工个人信息
void Mod_Emp;
void Mod_Emp()
{
if (this->m_FileIsEmpty)
{
cout << "文件不存在或记录为空" << endl;
}
else
{
cout << "请输入要修改的员工信息编号:" << endl;
int id = 0 ;
cin >> id ;
int ref = this -> IsExist(id);
if (ref != -1)
{
delete this->EmpArry[ref] ;
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、普通员工" << endl;
cout << "2、经理" << endl;
cout << "3、总裁" << 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;
}
this->m_EmpArry[index] = worker;
cout << "修改成功!" << endl;
this->save();
else
{
cout << "修改失败,员工不存在" << endl;
}
}
}
}
查找职工信息 : 按照职工的编号或者职工的姓名进行查找相关的人员信息
void Find_Emp;
void Find_Emp()
{
if (this->m_FileIsEmpty)
{
cout << "文件不存在或记录为空" << endl;
}
else
{
int select = 0;
cout << "请输入想要查找的方式:" << endl;
cout << "1、按照职工编号查找 " << endl;
cout << "2、按照职工姓名查找 " << endl;
cin >> select;
if(select == 1)
{
int id = 0;
cout << "请输入员工编号:" << endl;
cin >> id;
int ref = this -> IsExit(id)
if(ref != -1)
{
cout << "查到此人,信息如下:" << endl;
this->EmpArry[ref].showinfo();
}
else
{
cout << "查无此人" << endl;
}
}
else if(select == 2)
{
cout<< "请输入员工姓名:" << endl;
string name = "";
cin >> name ;
bool flag = false;//查找到的标志
for(int i = 0 ; i < EmpNum ; i++)
{
if(this->EmpArry[i]->m_name == name )
{
cout << "查到此人,信息如下:" << endl;
flag = true;
this->EmpArry[i]->showinfo();
break;
}
if (flag == false)
{
cout << "查无此人" << endl;
}
}
}
else
{
cout << "输入有误"<< endl;
}
}
system("pause");
system("cls");
}
按照编号排序 : 按照职工编号,进行排序,排序规则由用户指定(这边排序方式是选择排序 重点)
void Sort_Emp();
void Sort_Emp()
{
if (this->m_FileIsEmpty)
{
cout << "文件不存在或记录为空" << endl;
system("pause");
system("cls");
}
else
{
cout << "请选择想要排序的方式:" << endl;
cout << "1、按照职工号进行升序" << endl;
cout << "2、按照职工号进行降序" << endl;
int select = 0;
cin >> select; // 选择排序
for (int i = 0 ; i < this->Emp_Num ; i++)
{
int maxormin = i ;
if (select == 1)
{
if (m_EmpArry[minOrMax]->m_ID > m_EmpArry[j]->m_ID)
{
minOrMax = j;
}
}
else
{
if (m_EmpArry[minOrMax]->m_ID < m_EmpArry[j]->m_ID)
{
minOrMax = j;
}
}
}
if(i != minOrMax)
{
Worker* temp = m_EmpArry[i];
m_EmpArry[i] = m_EmpArry[minOrMax];
m_EmpArry[minOrMax] = temp;
}
cout << "排序成功,排序后结果为:" << endl;
this->save();
this->show_Emp();
}
}
清空所有文档 : 清空文件中记录的所有职工信息(清空前需要再次确认,防止误删)
Clean_File() ;
void Clean_File()
{
if (this->m_FileIsEmpty)
{
cout << "文件不存在或记录为空" << endl;
}
else
{
cout << "你确定要清空文件么?" << endl;
cout << "1、确认" << endl;
cout << "2、返回" << endl;
int select = 0 ;
cin >> select;
if (select == 1)
{
ofstream ofs;
//打开模式 ios::trunc 如果存在,删除文件并重新创建
ofs.open(FILENAME , ios::trunc)
ofs.close();
if(this->EmpArry != NULL)
{
for(int i = 0 ; i < EmpNum ; i++)
{
if(this->EmpArry[i] != NULL)
{
delete this->m_EmpArry[i];
this->m_EmpArry[i] = NULL;
}
}
this->m_EmpNum = 0;
delete[] this->m_EmpArry;
this->m_EmpArry = NULL;
this->m_FileIsEmpty = true;
}
cout << "清空成功!" << endl;
}
}
system("pause");
system("cls");
}