C++学习：职工管理系统

已于 2024-09-29 20:20:39 修改
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文章标签： 学习
于 2024-09-29 18:27:39 首次发布
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本文链接：https://blog.youkuaiyun.com/DesolateGIS/article/details/142641255

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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