【C++学习笔记】练习小项目之STL实现机房预约系统

【C++学习笔记】练习小项目之STL实现机房预约系统

一、功能描述

二、代码实现

三、学习后记

一、功能描述

功能和要求比较多，如下图所示：

思维导图：

二、代码实现

main函数：

/*
@version: Visual studio 2017
@author: Sally Lau
@software: C++
@creatTime: 2021/8/05 20：25
@description: 机房预约系统
*/

#include<iostream>
using namespace std;
#include<string>
#include"identity.h"
#include<fstream>
#include"globalFile.h"
#include"manager.h"
#include"student.h"
#include"teacher.h"

//进入老师子菜单
void teacherMenu(Identity * &teacher)
{
	while (true)
	{
		//调用学生子菜单
		teacher->operMenu();
		Teacher *tea = (Teacher*)teacher;

		int select = 0;
		//接收用户选择
		cin >> select;
		if (select == 1)  //查看所有预约
		{
			tea->showAllOrder();
		}
		else if (select == 2)    //审核预约
		{
			tea->validOrder();
		}
		else
		{
			//注销登录
			delete teacher;  //销毁掉堆区对象
			cout << "注销成功！" << endl;
			system("pause");
			system("cls");
			return;
		}

	}

}


//进入学生子菜单
void studentMenu(Identity * &student)
{
	while (true)
	{
		//调用学生子菜单
		student->operMenu();
		Student *stu = (Student*)student;

		int select = 0;
		//接收用户选择
		cin >> select;
		if (select == 1)  //申请预约
		{
			stu->applyOrder();
		}
		else if (select == 2)    //查看自己的预约
		{
			stu->showMyOrder();
		}
		else if (select == 3)    //查看所有人的预约
		{
			stu->showAllOrder();
		}
		else if (select == 4)    //取消预约
		{
			stu->cancelOrder();
		}
		else
		{
			//注销登录
			delete student;  //销毁掉堆区对象
			cout << "注销成功！" << endl;
			system("pause");
			system("cls");
			return;
		}

	}

}

//进入管理员子菜单
void managerMenu(Identity * &manager)
{
	while (true)
	{
		//调用管理员子菜单
		manager->operMenu();   //多态
		//将父类指针转为子类指针，调用子类里其他接口
		Manager *man = (Manager*)manager;
		
		int select = 0;
		//接收用户选择
		cin >> select;
		if (select==1)  //添加账号
		{
			//cout << "添加账号" << endl;
			man->addPerson();

		}
		else if (select == 2)    //查看账号
		{
			//cout << "查看账号" << endl;
			man->showPerson();
		}
		else if (select == 3)    //查看机房
		{
			//cout << "查看机房" << endl;
			man->showComputer();
		}
		else if (select == 4)    //清空预约
		{
			//cout << "清空预约" << endl;
			man->cleanFile();
		}
		else
		{
			//注销
			delete manager;  //销毁掉堆区对象
			cout << "注销成功！" << endl;
			system("pause");
			system("cls");
			return;
		}

	}
}

//登录功能   参数1 操作文件名  参数2 操作身份类型
void loginIn(string fileName, int type)
{
	//父类指针 用于指向子类对象
	Identity * person = NULL;

	//读文件
	ifstream ifs;
	ifs.open(fileName, ios::in);

	//判断文件是否处在
	if (!ifs.is_open())
	{
		cout << "文件不存在" << endl;
		ifs.close();
		return;
	}

	//准备接收用户信息
	int id = 0;
	string name;
	string pwd;

	//判断用户身份
	if (type == 1)       //学生
	{
		cout << "请输入你的学号：" << endl;
		cin >> id;
	}
	else if (type == 2)  //老师
	{
		cout << "请输入您的职工号：" << endl;
		cin >> id;
	}

	cout << "请输入用户名：" << endl;
	cin >> name;

	cout << "请输入密码：" << endl;
	cin >> pwd;

	if (type == 1)
	{
		//学生身份验证
		int fId;       //从文件中读取的id号
		string fName;  //从文件中读取的姓名
		string fPwd;   //从文件中读取的密码
		while (ifs >> fId && ifs >> fName && ifs >> fPwd)
		{
			//与用户输入的信息做对比
			if (fId == id && fName == name && fPwd == pwd)
			{
				cout << "学生验证登录成功！" << endl;
				system("pause");
				system("cls");

				person = new Student(id, name, pwd);
				//进入学生身份的子菜单
				studentMenu(person);


				return;

			}

		}

	}
	else if (type == 2)
	{
		//老师身份验证
		int fId;       //从文件中读取的id号
		string fName;  //从文件中读取的姓名
		string fPwd;   //从文件中读取的密码
		while (ifs >> fId && ifs >> fName && ifs >> fPwd)
		{
			//与用户输入的信息做对比
			if (fId == id && fName == name && fPwd == pwd)
			{
				cout << "老师验证登录成功！" << endl;
				system("pause");
				system("cls");

				person = new Teacher(id, name, pwd);
				//进入老师身份的子菜单
				teacherMenu(person);

				return;

			}
		}

	}
	else if (type == 3)
	{
		//管理员身份验证
		string fName;  //从文件中读取的姓名
		string fPwd;   //从文件中读取的密码
		while (ifs >> fName && ifs >> fPwd)
		{
			//与用户输入的信息做对比
			if (fName == name && fPwd == pwd)
			{
				cout << "验证登录成功！" << endl;
				system("pause");
				system("cls");

				person = new Manager(name, pwd);

				//进入管理员子菜单界面
				managerMenu(person);

				return;

			}
		}
	}

	cout << "验证登录失败！" << endl;

	system("pause");
	system("cls");
	return;
}

int main()
{
	int select = 0; //用户输入

	while (true)
	{
		cout << "LHX================= 欢迎来到机房预约系统 =================LXY" << endl;
		cout << endl;
		cout << "请输入您的身份：" << endl;
		cout << "\t\t----------------------------------------\n";
		cout << "\t\t|                                      |\n";
		cout << "\t\t|            1. 学生代表               |\n";
		cout << "\t\t|                                      |\n";
		cout << "\t\t|            2. 老    师               |\n";
		cout << "\t\t|                                      |\n";
		cout << "\t\t|            3. 管 理 员               |\n";
		cout << "\t\t|                                      |\n";
		cout << "\t\t|            0. 退    出               |\n";
		cout << "\t\t----------------------------------------\n";
		cout << "输入您的选择：";
		cin >> select;

		switch (select)
		{
		case 1:      //学生身份
			loginIn(STUDENT_FILE, 1);

			break;
		case 2:      //老师身份
			loginIn(TEACHER_FILE, 2);

			break;
		case 3:      //管理员身份
			loginIn(ADMIN_FILE, 3);

			break;
		case 0:      //退出系统
			cout << "欢迎下一次使用！" << endl;
			system("pause");
			return 0;
			break;
		default:
			cout << "输入有误，请重新输入！" << endl;
			system("pause");
			system("cls");
			break;

		}

	}


	system("pause");

	return 0;
}

管理员头文件：

#pragma once
#include<iostream>
using namespace std;
#include"identity.h"
#include<string>
#include"globalFile.h"
#include<vector>
#include"student.h"
#include"teacher.h"
#include"computerRoom.h"


//管理员类
class Manager: public Identity
{
public:
	//默认构造
	Manager();

	//有参构造
	Manager(string name, string password);

	//菜单界面
	virtual void operMenu();

	//添加账号
	void addPerson();

	//查看账号
	void showPerson();

	//查看机房信息
	void showComputer();

	//清空预约记录
	void cleanFile();

	//初始化容器
	void initVecotr();

	//学生容器
	vector<Student>vStu;

	//老师容器
	vector<Teacher>vTea;

	//检测重复 参数（传入id,传入类型）  返回（true 有重复；false 没有重复）
	bool checkRepeat(int id, int ttype);

	//机房信息
	vector<computerRoom>vCom;

};

管理员源文件：

#include"manager.h"
#include<string>
#include<fstream>
#include"globalFile.h"
#include"student.h"
#include"teacher.h"
#include<algorithm>

//默认构造
Manager::Manager()
{

}

//有参构造
Manager::Manager(string name, string password)
{
	//初始化管理员信息
	this->m_name = name;
	this->m_password = password;

	//初始化容器 获取到所有文件中 学生、老师信息
	this->initVecotr();

	//初始化机房信息
	ifstream ifs;
	ifs.open(COMPUTER_FILE, ios::in);

	computerRoom com;
	while (ifs >> com.m_comId&&ifs >> com.m_maxNum)
	{
		vCom.push_back(com);
	}
	ifs.close();
	cout << "机房的数量为：" << vCom.size() << endl;

}

//菜单界面
void Manager::operMenu()
{
	cout << "欢迎管理员：" << this->m_name << "登录！" << endl;
	cout << "\t\t---------------------------------------\n";
	cout << "\t\t|                                     |\n";
	cout << "\t\t|             1. 添加账号             |\n";
	cout << "\t\t|                                     |\n";
	cout << "\t\t|             2. 查看账号             |\n";
	cout << "\t\t|                                     |\n";
	cout << "\t\t|             3. 查看机房             |\n";
	cout << "\t\t|                                     |\n";
	cout << "\t\t|             4. 清空预约             |\n";
	cout << "\t\t|                                     |\n";
	cout << "\t\t|             0. 注销登录             |\n";
	cout << "\t\t|                                     |\n";
	cout << "\t\t---------------------------------------\n";
	cout << "请选择您的操作：" << endl;

}

//添加账号 防止账号重复（学生学号或者教职工号）
void Manager::addPerson()
{
	cout << "请输入添加账号的类型" << endl;
	cout << "1.添加学生" << endl;
	cout << "2.添加老师" << endl;

	string fileName;  //文件名
	string tip;       //提示id号
	string errortip;  //重复错误提示

	ofstream ofs;   //文件操作对象

	int select = 0;
	cin >> select;

	if (select == 1)
	{
		fileName = STUDENT_FILE;
		tip = "请输入学号：";
		errortip = "学号重复，请重新输入";
	}
	else
	{
		fileName = TEACHER_FILE;
		tip = "请输入职工号：";
		errortip = "职工号重复，请重新输入";
	}
	ofs.open(fileName, ios::out | ios::app);  //用追加的方式写文件
	
	int id;  //学号或者职工号
	string name;
	string pwd;

	cout << tip << endl;

	while(true)
	{	
		cin >> id;

		bool ret = checkRepeat(id, select);
		if (ret)  //有重复
		{
			cout << errortip << endl;
		}
		else
		{
			break;
		}
	}

	cout << "请输入姓名：" << endl;
	cin >> name;
	cout << "请输入密码：" << endl;
	cin >> pwd;

	//像文件中添加数据
	ofs << id << " " << name << " " << pwd << " " << endl;
	cout << "添加成功！" << endl;

	system("pause");
	system("cls");

	ofs.close();

	//初始化容器
	this->initVecotr();
}

void printStudent(Student &s)
{
	cout << "学号：" << s.m_id << "\t姓名：" << s.m_name 
		<< "\t密码：" << s.m_password << endl;
}
void printTeacher(Teacher &t)
{
	cout << "职工号：" << t.m_teacherId << "\t姓名：" << t.m_name
		<< "\t密码：" << t.m_password << endl;
}
//查看账号
void Manager::showPerson()
{
	cout << "请选择查看的内容：" << endl;
	cout << "1.查看所有的学生" << endl;
	cout << "2.查看所有的老师" << endl;

	int select = 0;
	cin >> select;

	if (select == 1)
	{
		//查看学生
		cout << "所有学生的信息如下：" << endl;
		for_each(vStu.begin(), vStu.end(), printStudent);
	}
	else
	{
		//查看老师
		cout << "所有老师的信息如下：" << endl;
		for_each(vTea.begin(), vTea.end(), printTeacher);
	}

	system("pause");
	system("cls");
}

//查看机房信息
void Manager::showComputer()
{
	cout << "机房信息如下：" << endl;

	for (vector<computerRoom>::iterator it = vCom.begin(); it != vCom.end(); it++)
	{
		cout << "机房编号：" << it->m_comId << "  机房最大容量：" << it->m_maxNum << endl;
	}

	system("pause");
	system("cls");
}

//清空预约记录
void Manager::cleanFile()
{
	ofstream ofs(ORDER_FILE, ios::trunc);
	ofs.close();

	cout << "清空成功！" << endl;

	system("pause");
	system("cls");

}

//初始化容器
void Manager::initVecotr()
{
	//确保容器清空状态
	vStu.clear();
	vTea.clear();

	//读取信息 学生
	ifstream ifs;
	ifs.open(STUDENT_FILE, ios::in);
	if (!ifs.is_open())
	{
		cout << "文件读取失败" << endl;
		return;
	}

	Student s;
	while (ifs >> s.m_id&&ifs >> s.m_name&&ifs >> s.m_password)
	{
		vStu.push_back(s);

	}
	cout << "当前学生数量为：" << vStu.size() << endl;
	ifs.close();

	//读取信息 老师
	ifs.open(TEACHER_FILE, ios::in);
	if (!ifs.is_open())
	{
		cout << "文件读取失败" << endl;
		return;
	}

	Teacher t;

	while (ifs >> t.m_teacherId &&ifs >> t.m_name&&ifs >> t.m_password)
	{
		vTea.push_back(t);

	}
	cout << "当前老师数量为：" << vTea.size() << endl;
	ifs.close();

}

//检测重复 参数（传入id,传入类型）  返回（true 有重复；false 没有重复）
bool Manager::checkRepeat(int id, int type)
{
	if (type == 1)
	{
		//检测学生
		for (vector<Student>::iterator it = vStu.begin(); it != vStu.end(); it++)
		{
			if (id == it->m_id)
			{
				return true;
			}
		}
	}
	else
	{
		//检测老师
		for (vector<Teacher>::iterator it = vTea.begin(); it != vTea.end(); it++)
		{
			if (id == it->m_teacherId)
			{
				return true;
			}
		}
	}

	return false;
}

学生头文件

#pragma once
#include<iostream>
using namespace std;
#include"identity.h"
#include<string>
#include"computerRoom.h"
#include<fstream>
#include"globalFile.h"
#include<vector>
#include"orderFile.h"


//学生类
class Student: public Identity
{
public:
	//默认构造
	Student();

	//有参构造 学号 姓名 密码
	Student(int id, string name, string password);

	//菜单界面
	virtual void operMenu();

	//申请预约
	void applyOrder();

	//查看自己预约
	void showMyOrder();

	//查看所有预约
	void showAllOrder();

	//取消预约
	void cancelOrder();

	int m_id;  //学号

	//机房容器
	vector<computerRoom> vCom ;


};

学生源文件：

#include"student.h"
#include<string>


//默认构造
Student::Student()
{

}

//有参构造 学号 姓名 密码
Student::Student(int id, string name, string password)
{
	//初始化属性
	this->m_id = id;
	this->m_name = name;
	this->m_password = password;

	//初始化机房信息
	ifstream ifs;
	ifs.open(COMPUTER_FILE, ios::in);

	computerRoom com;
	while (ifs >> com.m_comId&&ifs >> com.m_maxNum)
	{
		//将读取的信息放入到容器中
		vCom.push_back(com);
	}


}

//菜单界面
void Student::operMenu()
{
	cout << "欢迎学生代表：" << this->m_name << "登录！" << endl;
	cout << "\t\t--------------------------------------------\n";
	cout << "\t\t|                                          |\n";
	cout << "\t\t|              1. 申请预约                 |\n";
	cout << "\t\t|                                          |\n";
	cout << "\t\t|              2. 查看我的预约             |\n";
	cout << "\t\t|                                          |\n";
	cout << "\t\t|              3. 查看所有预约             |\n";
	cout << "\t\t|                                          |\n";
	cout << "\t\t|              4. 取消预约                 |\n";
	cout << "\t\t|                                          |\n";
	cout << "\t\t|              0. 注销登录                 |\n";
	cout << "\t\t|                                          |\n";
	cout << "\t\t--------------------------------------------\n";
	cout << "请选择您的操作：" << endl;

}

//申请预约
void Student::applyOrder()
{
	cout << "机房开放时间为周一至周五" << endl;
	cout << "请输入申请预约的时间：" << endl;
	cout << "1. 周一" << endl;
	cout << "2. 周二" << endl;
	cout << "3. 周三" << endl;
	cout << "4. 周四" << endl;
	cout << "5. 周五" << endl;

	int data = 0;   //日期
	int interval = 0;  //时间段
	int room = 0;    //机房编号

	while (true)
	{
		cin >> data;
		if (data >= 1 && data <= 5)
		{
			break;
		}
		cout << "输入有误，请重新输入" << endl;
	}

	cout << "请输入申请预约时间段：" << endl;
	cout << "1. 上午" << endl;
	cout << "2. 下午" << endl;
	while (true)
	{
		cin >> interval;
		if (interval >= 1 && interval <= 2)
		{
			break;
		}
		cout << "输入有误，请重新输入" << endl;
	}

	cout << "请选择机房：" << endl;
	for (int i = 0; i < vCom.size(); i++)
	{
		cout << vCom[i].m_comId << "号机房容量为：" << vCom[i].m_maxNum << endl;
	}
	while (true)
	{
		cin >> room;
		if (room >= 1 && room <= 3)
		{
			break;
		}
		cout << "输入有误，请重新输入" << endl;
	}
	cout << "预约成功！审核中" << endl;

	ofstream ofs;
	ofs.open(ORDER_FILE, ios::app);

	ofs << "date:" << data << " ";
	ofs << "interval:" << interval << " ";
	ofs << "stuId:" << this->m_id << " ";
	ofs << "stuName:" << this->m_name << " ";
	ofs << "roomId:" << room << " ";
	ofs << "status:" << 1 << endl;  //1表示审核中

	ofs.close();

	system("pause");
	system("cls");
}

//查看自己预约
void Student::showMyOrder()
{
	orderFile of;
	if (of.m_size == 0)
	{
		cout << "无预约记录" << endl;
		system("pause");
		system("cls");
		return;
	}
	for (int i = 0; i < of.m_size; i++)
	{
		//将字符型转换为整型  string转int
//1. string利用.c_str()转为const char *
//2. 利用atoi(const char *)转为int
if (atoi(of.m_orderData[i]["stuId"].c_str()) == this->m_id)  //找到自身预约
{
	cout << "预约日期：周" << of.m_orderData[i]["date"] << " ";
	cout << "时间段：" <<
		(of.m_orderData[i]["interval"] == "1" ? "上午" : "下午") << " ";
	cout << "机房编号：" << of.m_orderData[i]["roomId"] << " ";
	string status = "状态：";
	//1 审核中  2 已预约  -1 预约失败  0 取消预约
	if (of.m_orderData[i]["status"] == "1")
	{
		status += "审核中";
	}
	else if (of.m_orderData[i]["status"] == "2")
	{
		status += "预约成功";
	}
	else if (of.m_orderData[i]["status"] == "-1")
	{
		status += "预约失败，审核未通过";
	}
	else
	{
		status += "预约已取消";
	}
	cout << status << endl;
}
	}

	system("pause");
	system("cls");


}

//查看所有预约
void Student::showAllOrder()
{
	orderFile of;
	if (of.m_size == 0)
	{
		cout << "无预约记录" << endl;
		system("pause");
		system("cls");
		return;
	}

	for (int i = 0; i < of.m_size; i++)
	{
		cout << i + 1 << "、";
		cout << "预约日期：周" << of.m_orderData[i]["date"] << " ";
		cout << "时间段：" <<
			(of.m_orderData[i]["interval"] == "1" ? "上午" : "下午") << " ";
		cout << "学号：" << of.m_orderData[i]["stuId"] << " ";
		cout << "姓名：" << of.m_orderData[i]["stuName"] << " ";
		cout << "机房编号：" << of.m_orderData[i]["roomId"] << " ";
		string status = "状态：";
		//1 审核中  2 已预约  -1 预约失败  0 取消预约
		if (of.m_orderData[i]["status"] == "1")
		{
			status += "审核中";
		}
		else if (of.m_orderData[i]["status"] == "2")
		{
			status += "预约成功";
		}
		else if (of.m_orderData[i]["status"] == "-1")
		{
			status += "预约失败，审核未通过";
		}
		else
		{
			status += "预约已取消";
		}
		cout << status << endl;

	}
	system("pause");
	system("cls");
}

//取消预约
void Student::cancelOrder()
{
	orderFile of;
	if (of.m_size == 0)
	{
		cout << "无预约记录" << endl;
		system("pause");
		system("cls");
		return;
	}
	cout << "审核中或预约成功的记录可以取消，请输入取消的记录" << endl;
	vector<int>v;  //存放在最大容器中的下标编号

	int index = 1;
	for (int i = 0; i < of.m_size; i++)
	{
		//先判断是自身学号
		if (this->m_id == atoi(of.m_orderData[i]["stuId"].c_str()))
		{
			//再筛选状态 审核中或者预约成功
			if (of.m_orderData[i]["status"] == "1" || of.m_orderData[i]["status"] == "2")
			{
				v.push_back(i);
				cout << index++ << "、";
				cout << "预约日期：周" << of.m_orderData[i]["date"] << " ";
				cout << "时间段：" <<
					(of.m_orderData[i]["interval"] == "1" ? "上午" : "下午") << " ";
				cout << "学号：" << of.m_orderData[i]["stuId"] << " ";
				cout << "姓名：" << of.m_orderData[i]["stuName"] << " ";
				cout << "机房编号：" << of.m_orderData[i]["roomId"] << " ";
				string status = "状态：";
				//1 审核中  2 已预约  -1 预约失败  0 取消预约
				if (of.m_orderData[i]["status"] == "1")
				{
					status += "审核中";
				}
				else if (of.m_orderData[i]["status"] == "2")
				{
					status += "预约成功";
				}
				cout << status << endl;
			}
		}

	}

	cout << "请输入取消的记录，0代表返回" << endl;
	int select = 0;

	while (true)
	{
		cin >> select;

		if (select >= 0 && select <= v.size())
		{
			if (select == 0)
			{
				break;
			}
			else
			{
				of.m_orderData[v[select - 1]]["status"] = "0";

				of.updateOrder();

				cout << "已取消预约" << endl;
				break;
			}
		}
	}

	system("pause");
	system("cls");
}

老师头文件

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

//老师类
class Teacher :public Identity
{
public:
	//默认构造
	Teacher();

	//有参构造
	Teacher(int id, string name, string password);

	//菜单界面
	virtual void operMenu();

	//查看所有预约
	void showAllOrder();

	//审核预约
	void validOrder();

	int m_teacherId; //职工号
};

老师源文件：

#include"teacher.h"


//默认构造
Teacher::Teacher()
{

}

//有参构造
Teacher::Teacher(int id, string name, string password)
{


}

//菜单界面
void Teacher::operMenu()
{
	cout << "欢迎教师：" << this->m_name << "登录！" << endl;
	cout << "\t\t--------------------------------------------\n";
	cout << "\t\t|                                          |\n";
	cout << "\t\t|              1. 查看所有预约             |\n";
	cout << "\t\t|                                          |\n";
	cout << "\t\t|              2. 审核预约                 |\n";
	cout << "\t\t|                                          |\n";
	cout << "\t\t|              0. 注销登录                 |\n";
	cout << "\t\t|                                          |\n";
	cout << "\t\t--------------------------------------------\n";
	cout << "请选择您的操作：" << endl;
}

//查看所有预约
void Teacher::showAllOrder()
{
	orderFile of;
	if (of.m_size == 0)
	{
		cout << "无预约记录" << endl;
		system("pause");
		system("cls");
		return;
	}

	for (int i = 0; i < of.m_size; i++)
	{
		cout << i + 1 << "、";
		cout << "预约日期：周" << of.m_orderData[i]["date"] << " ";
		cout << "时间段：" <<
			(of.m_orderData[i]["interval"] == "1" ? "上午" : "下午") << " ";
		cout << "学号：" << of.m_orderData[i]["stuId"] << " ";
		cout << "姓名：" << of.m_orderData[i]["stuName"] << " ";
		cout << "机房编号：" << of.m_orderData[i]["roomId"] << " ";
		string status = "状态：";
		//1 审核中  2 已预约  -1 预约失败  0 取消预约
		if (of.m_orderData[i]["status"] == "1")
		{
			status += "审核中";
		}
		else if (of.m_orderData[i]["status"] == "2")
		{
			status += "预约成功";
		}
		else if (of.m_orderData[i]["status"] == "-1")
		{
			status += "预约失败，审核未通过";
		}
		else
		{
			status += "预约已取消";
		}
		cout << status << endl;

	}
	system("pause");
	system("cls");
}

//审核预约
void Teacher::validOrder()
{
	orderFile of;
	if (of.m_size == 0)
	{
		cout << "无预约记录" << endl;
		system("pause");
		system("cls");
		return;
	}
	cout << "待审核的预约记录如下：" << endl;
	vector<int> v;
	int index = 0;
	for (int i = 0; i < of.m_size; i++)
	{
		if (of.m_orderData[i]["status"] == "1")
		{
			v.push_back(i);
			cout << ++index << " ";
			cout << "预约日期：周" << of.m_orderData[i]["date"] << " ";
			cout << "时间段：" <<
				(of.m_orderData[i]["interval"] == "1" ? "上午" : "下午") << " ";
			cout << "学号：" << of.m_orderData[i]["stuId"] << " ";
			cout << "姓名：" << of.m_orderData[i]["stuName"] << " ";
			cout << "机房编号：" << of.m_orderData[i]["roomId"] << " ";
			string status = "状态：审核中";
			cout << status << endl;

		}
	}

	cout << "请输入审核的预约记录，0代表返回" << endl;
	int select = 0;  //接收用户选择的预约记录
	int ret = 0;    //接收预约结果记录

	while (true)
	{
		cin >> select;

		if (select >= 0 && select <= v.size())
		{
			if (select == 0)
			{
				break;
			}
			else
			{
				//审核
				cout << "请输入审核结果：" << endl;
				cout << "1、通过" << endl;
				cout << "2、不通过" << endl;
				cin >> ret;
				if (ret == 1)
				{
					of.m_orderData[v[select - 1]]["status"] = "2";  //审核通过
				}
				else
				{
					of.m_orderData[v[select - 1]]["status"] = "-1";  //审核不通过
				}
				of.updateOrder(); //更新预约记录

				cout << "审核完毕！" << endl;
				break;
			}
		}
		cout << "输入有误，请重新输入！" << endl;
	}

	system("pause");
	system("cls");

}

其他：

/*orderFile.h*/
#pragma once
#include<iostream>
using namespace std;
#include"identity.h"
#include<string>
#include"computerRoom.h"
#include<fstream>
#include"globalFile.h"
#include<vector>
#include<map>

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

	//更新预约记录
	void updateOrder();

	//记录预约条数
	int m_size;

	//记录所有预约信息的容器   key记录条数  value具体记录键值对信息
	map<int, map<string, string>>m_orderData;

};

/*orderFile.cpp*/
#include"orderFile.h"

//构造函数
orderFile::orderFile()
{
	ifstream ifs;
	ifs.open(ORDER_FILE, ios::in);

	string date;     //日期
	string interval; //时间段
	string stuId;    //学生编号
	string stuName;  //学生姓名
	string roomId;   //机房编号
	string status;   //预约状态

	this->m_size = 0;  //记录条数

	while (ifs >> date && ifs >> interval && ifs >> stuId
		&& ifs >> stuName && ifs >> roomId && ifs >> status)
	{
		//date:1
		string key;
		string value;
		map<string, string>m;

		//截取日期
		int pos = date.find(":");  //pos=4
		if (pos != -1)
		{
			key = date.substr(0, pos);  //0-4
			value = date.substr(pos + 1, date.size());  //size=6  5-6

			m.insert(make_pair(key, value));

		}
		//截取时间段
		pos = interval.find(":");  
		if (pos != -1)
		{
			key = interval.substr(0, pos);  
			value = interval.substr(pos + 1, interval.size());  

			m.insert(make_pair(key, value));

		}
		//截取学号
		pos = stuId.find(":"); 
		if (pos != -1)
		{
			key = stuId.substr(0, pos);  
			value = stuId.substr(pos + 1, stuId.size());  

			m.insert(make_pair(key, value));

		}

		//截取学生姓名
		pos = stuName.find(":");  
		if (pos != -1)
		{
			key = stuName.substr(0, pos);  
			value = stuName.substr(pos + 1, stuName.size());  

			m.insert(make_pair(key, value));

		}

		//截取机房编号
		pos = roomId.find(":");  
		if (pos != -1)
		{
			key = roomId.substr(0, pos); 
			value = roomId.substr(pos + 1, roomId.size());  

			m.insert(make_pair(key, value));

		}

		//截取预约状态
		pos = status.find(":");
		if (pos != -1)
		{
			key = status.substr(0, pos);
			value = status.substr(pos + 1, status.size());

			m.insert(make_pair(key, value));

		}

		//将小map容器放到大的map容器中
		this->m_orderData.insert(make_pair(this->m_size, m));
		this->m_size++;
	}
	ifs.close();

}

//更新预约记录
void orderFile::updateOrder()
{
	if (this->m_size == 0)
	{
		return;  //预约记录为0条
	}

	ofstream ofs;
	ofs.open(ORDER_FILE, ios::out|ios::trunc);
	for (int i = 0; i < this->m_size; i++)
	{
		ofs << "date:" << this->m_orderData[i]["date"] << " ";
		ofs << "interval:" << this->m_orderData[i]["interval"] << " ";
		ofs << "stuId:" << this->m_orderData[i]["stuId"] << " ";
		ofs << "stuName:" << this->m_orderData[i]["stuName"] << " ";
		ofs << "roomId:" << this->m_orderData[i]["roomId"] << " ";
		ofs << "status:" << this->m_orderData[i]["status"] << endl;

	}
	ofs.close();

}

computerRoom.h

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

//机房类
class computerRoom
{
public:

	int m_comId;  //机房ID号
	int m_maxNum; //机房最大容量
};

globalFile.h

#pragma once

//管理员文件
#define ADMIN_FILE      "admin.txt"

//学生文件
#define STUDENT_FILE    "student.txt"

//教师文件
#define TEACHER_FILE    "teacher.txt"

//机房信息文件
#define COMPUTER_FILE    "computerRoom.txt"

//订单文件
#define ORDER_FILE       "order.txt"

identity.h

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

//身份抽象基类（子类包括 学生 老师 管理员）
class Identity
{
public:
	//操作菜单 纯虚函数
	virtual void operMenu() = 0;

	string m_name;  //用户名
	string m_password;  //密码

};

三、学习后记

这是最后一个练习案例了，昨天到今天花2天时间做完了这个案例，感觉是一个很综合的练习，其中涉及前面所学的很多知识，不只是STL，还有多态等知识点。突然有一种且做且珍惜的感觉，哈哈！从七月初开始学C++的教程到今天，正式学完，完结撒花！~~~
结束也是一种新的开始！
未来继续加油吧！！
多练多写多思考！