C++学习:职工管理系统

目录

一、功能分析

二、头文件

1.workerManager.h

2.worker.h

3.employee.h

4.manager.h

5.boss.h

三、源文件

1.职工管理系统.cpp

2.employee.cpp

3.manager.cpp

4.boss.cpp

5.workerManager.cpp


 

一、功能分析

公司有三种员工分别为 普通员工、经理和老板

每个员工有  职工编号,姓名和部门编号

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
要求实现如下8个功能:

退出管理程序
增加职工信息
显示职工信息
删除离职职工
修改职工信息
查找职工信息
按照编号排序
清空所有文档

二、头文件

1.workerManager.h

 

2.worker.h

#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;

	int id; // 职工编号
	string name; //职工姓名
	int did; //职工所在部门编号
};

3.employee.h

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

//员工类
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();
	//获取职工岗位名称
	virtual string getDeptName();
};

4.manager.h

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

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();
	//获取职工岗位名称
	virtual string getDeptName();
};

5.boss.h

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

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();
	//获取职工岗位名称
	virtual string getDeptName();
};

三、源文件

1.职工管理系统.cpp

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

int main()
{
	//实例化管理者对象
	WorkerManager wm;
	int choice = 0;
	while (true)
	{
		//展示菜单
		wm.Show_Menu();
		cout << "请输入你的选择:" << endl;
		cin >> choice;
		switch (choice)
		{
		case 0://退出系统
			wm.exitSystem();
			break;
		case 1://增加职工信息
			wm.Add_Emp();
			break;
		case 2://显示职工信息
			wm.showEmp();
			break;
		case 3://删除离职职工
			wm.DelEmp();
			break;
		case 4://修改职工信息
			wm.modEmp();
			break;
		case 5://查找职工信息
			wm.FindEmp();
			break;
		case 6://按照编号排序
			wm.sortEmp();
			break;
		case 7://清空所有文档
			wm.clean_File();
			break;
		default:
			system("cls");
			break;
		}
	}
	system("pause");
	return 0;
}

2.employee.cpp

#include "employee.h"

Employee::Employee(int id, string name, int did)
{
	this->id = id;
	this->name = name;
	this->did = did;
}

void Employee::showInfo()
{
	cout << "职工编号: " << this->id
		<< "\t职工姓名: " << this->name
		<< "\t岗位: " << this->getDeptName()
		<< "\t岗位职责:完成经理交给的任务" << endl;
}

string Employee::getDeptName()
{
	if (did == 1)
	{
		return string("普通员工");
	}
	else if (did == 2)
	{
		return string("经理");
	}
	else
	{
		return string("老板");
	}
}

3.manager.cpp

#include "manager.h"

Manager::Manager(int id, string name, int did)
{
	this->id = id;
	this->name = name;
	this->did = did;
}

void Manager::showInfo()
{
	cout << "职工编号: " << this->id
		<< "\t职工姓名: " << this->name
		<< "\t岗位: " << this->getDeptName()
		<< "\t岗位职责:完成老板交给的任务,并下发给员工" << endl;
}

string Manager::getDeptName()
{
	if (did == 1)
	{
		return string("普通员工");
	}
	else if (did == 2)
	{
		return string("经理");
	}
	else
	{
		return string("总裁");
	}
}

4.boss.cpp

#include "boss.h"

Boss::Boss(int id, string name, int did)
{
	this->id = id;
	this->name = name;
	this->did = did;
}

void Boss::showInfo()
{
	cout << "职工编号: " << this->id
		<< "\t职工姓名: " << this->name
		<< "\t岗位: " << this->getDeptName()
		<< "\t岗位职责:管理公司所有事务" << endl;
}

string Boss::getDeptName()
{
	if (did == 1)
	{
		return string("普通员工");
	}
	else if (did == 2)
	{
		return string("经理");
	}
	else
	{
		return string("总裁");
	}

}

5.workerManager.cpp

#include "workerManager.h"  //直接调用写好的头函数
#include "employee.h"
#include "manager.h"
#include "boss.h"

//类外实现构造函数
WorkerManager::WorkerManager()
{
	//分三种情况初始化
	// 
	//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;
		this->EmpNum = 0;
		this->Emp_Arr = NULL;
		this->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;
		this->EmpNum = 0;
		this->Emp_Arr = NULL;
		this->FileIsEmpty = true;
		ifs.close();
		return;
	}

	//3、文件存在且数据不为空
	int num = this->getEmpNum();
	//cout << "职工人数为:" << num << endl;
	this->EmpNum = num;

	//开辟空间
	this->Emp_Arr = new Worker * [this->EmpNum];
	//将文件中的数据读到数组中
	this->initEmp();

	//测试代码
	/*for (int i = 0; i < this->EmpNum; i++)
	{
		cout << "职工编号:" << this->Emp_Arr[i]->id
			<< "姓名:" << this->Emp_Arr[i]->name
			<< "部门编号:" << this->Emp_Arr[i]->did << endl;
	}*/
};

//类外实现析构函数
WorkerManager::~WorkerManager()
{
	if (this->Emp_Arr != NULL)
	{
		delete[] this->Emp_Arr;
		this->Emp_Arr = NULL;

	}
};

//类外实现菜单函数
void WorkerManager::Show_Menu()
{
	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;
}

//实现退出系统函数
void WorkerManager::exitSystem()
{
	cout << "欢迎下次使用!" << endl;
	system("pause");
	exit(0);
}

//实现员工添加功能
void WorkerManager::Add_Emp()
{
	cout << "请输入添加的职工的数量:" << endl;
	int addNum = 0; //添加人数
	cin >> addNum;
	if (addNum > 0)
	{
		//添加
		//计算添加新空间大小
		int newSize = this->EmpNum + addNum;

		//开辟空间
		Worker** newSpace = new Worker * [newSize];

		//将原来的空间的数据拷贝到新空间上
		if (this->Emp_Arr != NULL)
		{
			for (int i = 0; i < this->EmpNum; i++)
			{
				newSpace[i] = this->Emp_Arr[i];
			}
		}

		//开始添加新的数据
		for (int i = 0; i < addNum; i++)
		{
			int id;
			string name;
			int did;
			cout << "请输入第" << i + 1 << "个新职工编号:" << endl;
			cin >> id;
			cout << "请输入该职工姓名:" << endl;
			cin >> name;
			cout << "请选择该职工岗位:" << endl;
			cout << "1、普通员工" << endl;
			cout << "2、经理" << endl;
			cout << "3、老板" << endl;

			Worker* worker_1 = NULL;
			cin >> did;

			switch (did)
			{
			case 1:
				worker_1 = new Employee(id, name, did);
			case 2:
				worker_1 = new Manager(id, name, did);
			case 3:
				worker_1 = new Boss(id, name, did);
			deault:
				break;
			}
			//将创建的职工指针保存到数组中
			newSpace[this->EmpNum + i] = worker_1;
		}
		//释放原有空间
		delete[] this->Emp_Arr;

		//更改新空间的指向
		this->Emp_Arr = newSpace;

		//更新新空间人数
		this->EmpNum = newSize;

		//更新一下文件不为空的情况
		this->FileIsEmpty = false;

		//提示成功添加
		cout << "成功添加" << addNum << "名新职工" << endl;

		//保存到文件中
		this->save();
	}
	else
	{
		cout << "数据有误" << endl;
	}

	//按任意键后清屏回到上一目录
	system("pause");
	system("cls");
}

//实现保存数据到文件
void WorkerManager::save()
{
	ofstream ofs;
	ofs.open(FILENAME, ios::out);  //用输出的方式打开文件,就是写入到文件

	for (int i = 0; i < this->EmpNum; i++)
	{
		ofs << this->Emp_Arr[i]->id << " "
			<< this->Emp_Arr[i]->name << " "
			<< this->Emp_Arr[i]->did << " " << endl;
	}
	//关闭文件
	ofs.close();
}

//统计文件中的人数
int WorkerManager::getEmpNum()
{
	ifstream ifs;
	ifs.open(FILENAME, ios::in);
	int id;
	string name;
	int did;
	int num = 0;
	while (ifs >> id && ifs >> name && ifs >> did)
	{
		num++;
	}
	return num;
}

//初始化员工
void WorkerManager::initEmp()
{
	ifstream ifs;
	ifs.open(FILENAME, ios::in);  //读文件,接受数据

	int id;
	string name;
	int did;

	int index = 0;
	while (ifs >> id && ifs >> name && ifs >> did)
	{
		Worker* worker = NULL;
		if (did == 1)  //根据所属部门创建不同对象
		{
			worker = new Employee(id, name, 1);
		}
		else if (did == 2)
		{
			worker = new Manager(id, name, 2);
		}
		else if (did == 3)
		{
			worker = new Boss(id, name, 3);
		}

		//存放在数组中
		this->Emp_Arr[index] = worker;
		index++;
	}
}

//显示职工
void WorkerManager::showEmp()
{
	if (FileIsEmpty)
	{
		cout << "文件不存在或记录为空!" << endl;
	}
	else
	{
		for (int i = 0; i < this->EmpNum; i++)
		{
			//利用多态调用接口
			this->Emp_Arr[i]->showInfo();
		}
	}
	system("pause");
	system("cls");//按任意键以后回到菜单选择状态
}

//删除员工
void WorkerManager::DelEmp()
{
	if (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->IsExit(id);
		if (index != -1)
		{
			for (int i = index; i < this->EmpNum - 1; i++)
			{
				this->Emp_Arr[i] = this->Emp_Arr[i + 1];
			}
			this->EmpNum--;  //更新一下数组中记录的人员个数
			//同步更新到文件
			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");//按任意键以后回到菜单选择状态
}

//判断职工是否存在
int WorkerManager::IsExit(int id)
{
	int index = -1;
	for (int i = 0; i < this->EmpNum; i++)
	{
		if (this->Emp_Arr[i]->id == id)
		{
			index = i;
			break;
		}
	}
	return index;
}

//修改职工
void WorkerManager::modEmp()
{
	if (FileIsEmpty)
	{
		cout << "文件不存在或记录为空!" << endl;
	}
	else
	{
		//按照职工编号删除
		cout << "请输入想要修改职工编号:" << endl;
		int id = 0;
		cin >> id;

		int ret = this->IsExit(id);
		if (ret != -1)
		{
			//查找到该编号的职工
			delete this->Emp_Arr[ret];
			int newid = 0;
			string newname = "";
			int newdid = 0;

			cout << "查到" << id << "号职工,请重新输入新职工号:" << 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 >> newdid;

			Worker* worker = NULL;
			switch (newdid)
			{
			case 1:
				worker = new Employee(newid, newname, newdid);
			case 2:
				worker = new Manager(newid, newname, newdid);
			case 3:
				worker = new Boss(newid, newname, newdid);
			deault:
				break;
			}

			//更新数据到数组中
			this->Emp_Arr[ret] = worker;
			cout << "修改成功!" << Emp_Arr[ret]->did << endl;

			this->save();
			cout << "删除成功" << endl;
		}
		else
		{
			cout << "修改失败,未找到该职工" << endl;
		}
	}
	system("pause");
	system("cls");//按任意键以后回到菜单选择状态
}

//查找职工
void WorkerManager::FindEmp()
{
	if (FileIsEmpty)
	{
		cout << "文件不存在或记录为空!" << endl;
	}
	else
	{
		//按照职工编号删除

		cout << "请输入查找方式:" << endl;
		cout << "1、按职工号查找" << endl;
		cout << "2、按职工姓名查找" << endl;
		int select = 0;
		cin >> select;
		if (select == 1)
		{
			cout << "请输入想要查找职工编号:" << endl;
			int id = 0;
			cin >> id;
			int ret = this->IsExit(id);
			if (ret != -1)
			{
				cout << "查找成功,该职工信息如下:" << endl;
				this->Emp_Arr[ret]->showInfo();
			}
			else
			{
				cout << "修改失败,未找到该职工" << endl;
			}
		}
		else if (select == 2)
		{
			cout << "请输入想要查找职工姓名:" << endl;
			string name;
			cin >> name;
			bool flag = false; //查找到标志
			for (int i = 0; i < this->EmpNum; i++)
			{
				if (Emp_Arr[i]->name == name)
				{
					cout << "查找成功,职工编号为:" << Emp_Arr[i]->id
						<< ",职工的信息如下" << endl;
					flag = true;
					this->Emp_Arr[i]->showInfo();
				}

			}
			if (flag == false)
			{
				cout << "修改失败,未找到该职工" << endl;
			}
		}
		else
		{
			cout << "输入项有误" << endl;
		}
	}
	system("pause");
	system("cls");//按任意键以后回到菜单选择状态
}

//排序职工
void WorkerManager::sortEmp()
{
	if (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、按职工号升序" << endl;
		cout << "2、按职工号降序:" << endl;
		int select;
		cin >> select;

		for (int i = 0; i < this->EmpNum - 1; i++)
		{
			int minOrmax = i;
			for (int j = i + 1; j < this->EmpNum; j++)
			{
				if (select == 1) //升序
				{
					if (this->Emp_Arr[minOrmax]->id > Emp_Arr[j]->id)
					{
						minOrmax = j;
					}
				}
				else  //降序
				{
					if (this->Emp_Arr[minOrmax]->id < Emp_Arr[j]->id)
					{
						minOrmax = j;
					}
				}
			}
			if (i != minOrmax)
			{
				Worker* temp = Emp_Arr[i];
				Emp_Arr[i] = Emp_Arr[minOrmax];
				Emp_Arr[minOrmax] = temp;
			}
		}
		cout << "排序成功,排序后的结果为:" << endl;
		this->save();
		this->showEmp();
	}
}

//清空文件
void WorkerManager::clean_File()
{
	cout << "取人清空?" << endl;
	cout << "1、确认" << endl;
	cout << "2、返回" << endl;
	int select;
	cin >> select;

	if (select == 1)
	{
		//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->Emp_Arr != NULL)
		{
			for (int i = 0; i < this->EmpNum; i++)
			{
				if (this->Emp_Arr[i] != NULL)
				{
					delete this->Emp_Arr[i];
				}
			}
			this->EmpNum = 0;
			delete[] this->Emp_Arr;
			this->Emp_Arr = NULL;
			this->FileIsEmpty = true;
		}
		cout << "清空成功!" << endl;
	}
	system("pause");
	system("cls");
}

 

 

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