C++:机房预约系统（四）——学生模块
//菜单界面
void Student::operMenu()
{
cout << "欢迎同学" << 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 查看自身预约 |\n";
cout << "\t\t | |\n";
cout << "\t\t | 3 查看所有人预约 |\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 << "请输入您的选择：";
}
//机房预约
vector<ComputerRoom> vCom;
//有参构造 学号，姓名，密码
Student::Student(int id, string name, string pwd)
{
//初始化属性
this->m_Id = id;
this->m_Name = name;
this->m_Pwd = pwd;
//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);//将读取的信息放入到 容器中
}
ifs.close();
}
//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 date = 0;//日期
int interval= 0;//时间段
int room = 0;//机房编号
while (true)
{
cin >> date;
if (date >= 1 && date <= 5)
{
break;
}
cout << "输入有误，请重新输入:" << endl;
}
cout << "请输入时间段:" << 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 << "号机房的容量为：" << 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:" << date << " ";
ofs << "interval:" << interval << " ";
ofs << "StuId:" << this->m_Id << " ";
ofs << "StuName:" << this->m_Name << " ";
ofs << "roomId:" << room << " ";
ofs << "status:" << 1 << endl;
ofs.close();
system("pause");
system("cls");
}
#pragma once
#include
//构造函数
OrderFile::OrderFile()
{
ifstream ifs;
ifs.open(ORDER_FILE, ios::in);
string date;//日起
string interval;//时间段
string StuId;//学生编号
string StuName;//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 )
{
/* cout << date << endl;
cout << interval << endl;
cout << StuId << endl;
cout << StuName << endl;
cout << roomId << endl;
cout << status << endl;*/
//date:1111
string key;
string value;
map<string, string>m;
//截取日起
int pos = date.find(":");//4
if (pos != -1)
{
key = date.substr(0, pos);//从0 开始截取，截取4个，pos为截取个数
value = date.substr(pos + 1, date.size() - pos - 1);//size = 9 pos = 4 size - pos = 5 - 1
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() - pos - 1);
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() - pos - 1);
m.insert(make_pair(key, value));
}
//截取姓名
pos = StuName.find(":");
if (pos != -1)
{
key = StuName.substr(0, pos);
value = StuName.substr(pos + 1, StuName.size() - pos - 1);
m.insert(make_pair(key, value));
}
//截取机房
pos = roomId.find(":");
if (pos != -1)
{
key = roomId.substr(0, pos);
value = roomId.substr(pos + 1, roomId.size() - pos - 1);
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() - pos - 1);
m.insert(make_pair(key, value));
}
//将小map放入大map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0条，直接return
}
ofstream ofs(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();
}
//查看自身预约
void Student::showMyOrder()
{
OrderFile of;
if (of.m_size == 0)
{
cout << "暂无预约记录！" << endl;
system("pause");
system("cls");
return;
}
for (int i = 0; i < of.m_size; i++)
{
//string 转int
//stirng 利用 .c_str() 转const char *
//利用atoi(const char *)转int
if (this->m_Id == atoi(of.m_orderData[i]["StuId"].c_str()))//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 << "暂无预约记录！" << 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");
}
注意上图，张三同学预约了三次，现在他想取消第三次。
首先，对于张三同学来说，他一共有三条记录，从1开始计数，一共1,2，3条
然后，对于所有同学的记录来说，张三同学的记录在全部记录中的编号为0,1，3
那么，我们先从头开始遍历全部记录，一旦找到张三符合条件的记录，就把当前的序号放入vector中。一共三条，我们知道这三条记录在容器中的下标为0,1，2，对应张三的第1,2，3条记录，即第一条记录是vector中的第0号元素，我们直接将张三同学眼中的记录编号减去1，就得到vector中元素的编号了。
最后，我们通过vector中的元素编号，去间接的取全部记录中张三同学记录的编号。
即vector={0,1，3}）（遍历出的张三符合条件的记录编号）
第三个记录编号为3，即在全部记录中这条记录的编号为3，且对张三来书这是他的第三条记录，但这个3，在vector中的下标为2，即vector[2]可以取到这个3，从而通过这个3，取到在全部记录中的位置。
//取消预约
void Student::cancelOrder()
{
OrderFile of;
if (of.m_size == 0)
{
cout << "暂无预约记录！" << endl;
system("pause");
system("cls");
return;
}
cout << "审核中或预约成功的记录可取消" << 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 审核中获预约成功
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 << " 机房号：" << of.m_orderData[i]["roomId"];
string status = " 状态： ";
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();//更新
cout << "已取消预约" << endl;
break;
}
}
cout << "输入有误请重新输入" << endl;
}
system("pause");
system("cls");
}