c#怎样转换成c++急！！！！

c# 代码：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;

namespace VehicleMngSys
{
    class Program
    {
        //利用正则表达式判断车辆ID是否合法，合法的ID是以C或T开头，后面跟4个数字
        static bool IsValidvId(string vId)
        {
            Regex r = new Regex(@"^[CT]\d{4}$");
            return r.IsMatch(vId);
        }

        static bool IsValidDateTime(string inputDateTime)
        {
            try
            {
                //解析成功，返回true,有异常则返回false
                DateTime.Parse(inputDateTime);
                return true;
            }
            catch
            {
                return false;
            }
        }

        //功能如果选择错误，按q可以回到主菜单
        static bool IsReturn(string quit)
        {
            return Char.ToLower(quit[0]) == 'q' ? true : false;
               
        }
        
        //添加一辆新车
        static void AddNewVehicle(Fleet f)
        {
            string vId ;

            do
            {
                Console.WriteLine("请输入车辆ID:");
                vId = Console.ReadLine();
                //功能如果选择错误，按q可以回到主菜单
                if (IsReturn(vId)) return;
            } while (!IsValidvId(vId));//判断车辆ID是否合法
            

            string strType;

            do
            {
                Console.WriteLine("请输入车辆类型(Car/Truck):");
                strType = Console.ReadLine();
                if (IsReturn(strType)) return;
            }while ((strType != "Car" && strType != "Truck"));//判断车辆类型的输入是否合法

            f.AddNewVehicle(vId, strType == "Car" ? VehicleType.Car : VehicleType.Truck);
            Console.WriteLine("添加新车成功，任意键继续！");
            Console.ReadKey();
        }

        //删除一辆已经存在的车
        static void DeleteExistVehicle(Fleet f)
        {
            string vId;

            do
            {
                Console.WriteLine("请输入要删除车辆的ID:");
                vId = Console.ReadLine();
                if (IsReturn(vId)) return;
            } while (!IsValidvId(vId));

            f.DeleteExistVehicle(vId);
        }

        //租车
        static void BookVehicle(Fleet f)
        {
            string strType;

            do
            {
                Console.WriteLine("请输入车辆类型(Car/Truck):");
                strType = Console.ReadLine();
                if (IsReturn(strType)) return;
            } while ((strType != "Car" && strType != "Truck"));//判断车辆类型的输入是否合法

            VehicleType vType = strType == "Car" ? VehicleType.Car : VehicleType.Truck;

            string vId;

            do
            {
                Console.WriteLine("请输入车辆ID:");
                vId = Console.ReadLine();
            } while (!IsValidvId(vId));//判断车辆ID是否合法

            DateTime rentStartDate;

            try
            {
                string inputDateTime;

                if (vType == VehicleType.Car)
                {
            
                    do
                    {
                        Console.WriteLine("请输入租车的开始时间(YYYY-MM-DD)：");
                        inputDateTime = Console.ReadLine();
                    } while (!IsValidDateTime(inputDateTime));

                    rentStartDate = Convert.ToDateTime(inputDateTime);
                    //利用linq方法在车辆集合中找到和指定ID匹配的车,v => v.vId == vId为lambda表达式
                    (f.vehicles.Single(v => v.vId == vId) as Car).BookCar(rentStartDate);
                }
                else
                {
                    string strRentType;

                    do
                    {
                        Console.WriteLine("请输入租车的方式（Hour/Day）：");
                        strRentType = Console.ReadLine();
                    } while ((strRentType != "Hour" && strRentType != "Day"));//判断卡车的出租类型是按小时还是按天

                    TructRentType trType = strRentType == "Hour" ? TructRentType.ByHour : TructRentType.ByDay;

                    do
                    {
                        if (trType == TructRentType.ByDay)
                        {
                            Console.WriteLine("请输入租车的开始时间(YYYY-MM-DD)：");
                        }
                        else
                        {
                            Console.WriteLine("请输入租车的开始时间(YYYY-MM-DD HH:mm:ss)：");
                        }

                        inputDateTime = Console.ReadLine();
                    } while (!IsValidDateTime(inputDateTime));

                    rentStartDate = Convert.ToDateTime(inputDateTime);
                    //利用linq方法在车辆集合中找到和指定ID匹配的车,v => v.vId == vId为lambda表达式
                    (f.vehicles.Single(v => v.vId == vId) as Truck).BookTruck(trType, rentStartDate);
                }

                Console.WriteLine("租车成功，任意键继续！");
                Console.ReadKey();
            }
            //异常可能是车辆已经出租，不能重复出租。或者是租车的时间不能比上一个还车的时间早，这与租车逻辑矛盾
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
                Console.ReadKey();
            }            
        }

        //还车
        static public void ReturnVehicle(Fleet f)
        {
            string vId;

            do
            {
                Console.WriteLine("请输入车辆ID:");
                vId = Console.ReadLine();
                if (IsReturn(vId)) return;
            } while (!IsValidvId(vId));

            Vehicle v = f.vehicles.Single(qv => qv.vId == vId);

            if (v.vType == VehicleType.Car)
            {
                Console.WriteLine("请输入租车的天数：");
            }
            else
            {
                //利用linq找到车辆出租信息集合中的最后一条记录，以确定是按小时还是按天出租
                if ((v as Truck).trDetails.OrderBy(qv => qv.rentStartDate).Last().tRentType == TructRentType.ByDay)
                {
                    Console.WriteLine("请输入租车的天数：");
                }
                else
                {
                    Console.WriteLine("请输入租车的小时数：");
                }
            }

            try
            {
                v.ReturnVehicle(Convert.ToInt32(Console.ReadLine()));
                //计算租车费用
                Console.WriteLine("您需要支付租车费用:{0:c} 元", v.CaculateFee());
                Console.WriteLine(" 还车车成功，任意键继续！");
                Console.ReadKey();
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
                Console.ReadKey();
            }
        }

        //按车辆ID及年月查询出租情况
        static void QueryRentChartById(Fleet f)
        {
            string inputDateTime;
         
            do
            {
                Console.WriteLine("请输入租车的开始时间(YYYY-MM-DD)：");
                inputDateTime = Console.ReadLine();
            } while (!IsValidDateTime(inputDateTime));

            DateTime queryYearMonth = Convert.ToDateTime(inputDateTime);
            string vId;

            do
            {
                Console.WriteLine("请输入车辆ID:");
                vId = Console.ReadLine();
                if (IsReturn(vId)) return;
            } while (!IsValidvId(vId));

            f.ShowRentChartByVId(vId, queryYearMonth);

            Console.WriteLine("敲任意键继续！");
            Console.ReadKey();
        }

        //按年月查询所有车的出租情况
        static void QueryRentChartByMonth(Fleet f)
        {
            string inputDateTime;

            do
            {
                Console.WriteLine("请输入租车的开始时间(YYYY-MM-DD)：");
                inputDateTime = Console.ReadLine();
            } while (!IsValidDateTime(inputDateTime));

            DateTime queryYearMonth = Convert.ToDateTime(inputDateTime);      
            f.ShowRentChartByMonth(queryYearMonth);

            Console.WriteLine("敲任意键继续！");
            Console.ReadKey();
        }

        // 查询车辆每月出租的详细费用情况
        static void ShowRentDetails(Fleet f)
        {
            string inputDateTime;

            do
            {
                Console.WriteLine("请输入租车的开始时间(YYYY-MM-DD)：");
                inputDateTime = Console.ReadLine();
            } while (!IsValidDateTime(inputDateTime));

            DateTime queryYearMonth = Convert.ToDateTime(inputDateTime);
            f.ShowRentDetails(queryYearMonth);

            Console.WriteLine("敲任意键继续！");
            Console.ReadKey();
        }

        static void Main(string[] args)
        {
            bool isExit = false;
            Fleet f = new Fleet();


            while (1 == 1)
            {
                if (!isExit)               
                {
                    Console.WriteLine("欢迎使用好运来车辆出租管理系统！");
                    Console.WriteLine("1.添加一辆新车");
                    Console.WriteLine("2.删除一辆已经存在的车");
                    Console.WriteLine("3.租车");
                    Console.WriteLine("4.还车");
                    Console.WriteLine("5.按年月及车辆ID查询车辆出租情况");
                    Console.WriteLine("6.按年月查询所有车辆的使用情况");
                    Console.WriteLine("7.按年月查询所有车辆的费用情况");
                    Console.WriteLine("8.保存车辆及出租情况记录");
                    Console.WriteLine("9.退出系统");
                    Console.WriteLine("请选择系统功能！");
                    ConsoleKeyInfo pk = Console.ReadKey();

                    switch (pk.KeyChar)
                    {
                        case '1':
                            AddNewVehicle(f);
                            break;
                        case '2':
                            DeleteExistVehicle(f);
                            break;
                        case '3':
                            BookVehicle(f);
                            break;
                        case '4':
                            ReturnVehicle(f);
                            break;
                        case '5':
                            QueryRentChartById(f);
                            break;
                        case '6':
                            QueryRentChartByMonth(f);
                            break;
                        case '7':
                            ShowRentDetails(f);
                            break;
                        case '8':
                            f.SaveRecs();
                            Console.WriteLine("保存记录成功，任意键继续！");
                            Console.ReadKey();
                            break;
                        case '9':
                            isExit = true;
                            f.SaveRecs();
                            break;
                        default:
                            break;
                    }
                }
                else
                {
                    break;
                }
            }
        
        }
    }
}