Simplified Cashbox KTV Reservation System

1081 程式設計

題目說明

製作一簡單的KTV預約系統。

1. Login: Input an ID number and password. If the ID number does not exist in the file Members.dat or the password is wrong, then login fails.
   1. Make Reservation: Insert a new record into the binary file ReservationInfo.dat.
   2. Reservation Enquiry/Canceling: Display all records in the file eservationInfo.dat for the current user, then let the user choose one of them to delete.
2. Registration: Insert a new record into the binary file Members.dat. Input an ID number, name and password. If the ID number already exists in the file Members.dat, then registration fails.

The file record format of the file Members.dat is

char IDNumber[ 12 ];	// account number
char password[ 24 ];	// password
char name[ 8 ];	// name

The file record format of the file ReservationInfo.dat is

char IDNumber[ 12 ];	// account number
int branchCode;	// branch code
Date date;	// reservation date
int numCustomers;	// number of customers

Caskbox KTV
branchCode Branch names
1 Taipei Dunhua South
2 Taipei SOGO
3 Taipei Songjiang
4 Taipei Nanjing
5 Taipei Linsen
6 Taipei Zhonghua New
7 Banqiao Guanqian
8 Yonghe Lehua
9 Taoyuan Zhonghua
10 Taoyuan Nankan
11 Zhongli Zhongyang
12 Hsinchu Beida
13 Taichung Ziyou
14 Chiayi Ren’ai
15 Tainan Ximen
16 Kaohsiung Zhonghua New

Input & Output 範例

Welcome to the Cashbox Party World!

1 - Login
2 - Registration
3 - End

Enter your choice (1~3): g

Enter your choice (1~3): 0

Enter your choice (1~3): 4

Enter your choice (1~3): 2

Input your ID Number: 555

The ID number 555 is illegal.

1 - Login
2 - Registration
3 - End

Enter your choice (1~3): 2

Input your ID Number: ggg

The ID number ggg is illegal.

1 - Login
2 - Registration
3 - End

Enter your choice (1~3): 2

Input your ID Number: g66

The ID number g66 is illegal.

1 - Login
2 - Registration
3 - End

Enter your choice (1~3): 2

Input your ID Number: c120057214

The ID number c120057214 is illegal.

1 - Login
2 - Registration
3 - End

Enter your choice (1~3): 2

Input your ID Number: c120057213
Input your Name: james
Choose a password: 111

Registration Completed!

1 - Login
2 - Registration
3 - End

Enter your choice (1~3): 2

Input your ID Number: c120057213

You are already a member!

1 - Login
2 - Registration
3 - End

Enter your choice (1~3): 1

Please enter your ID number: c120057222
Enter your password: 111

Invalid account number or password. Please try again.

Please enter your ID number: c120057213
Enter your password: 222

Invalid account number or password. Please try again.

Please enter your ID number: c120057213
Enter your password: 111

1 - Make Reservation
2 - Reservation Enquiry/Canceling
3 - End

Enter your choice (1~3): a

Enter your choice (1~3): 0

Enter your choice (1~3): 4

Enter your choice (1~3): 1

 1. Taipei Dunhua South
 2. Taipei SOGO
 3. Taipei Songjiang
 4. Taipei Nanjing
 5. Taipei Linsen
 6. Taipei Zhonghua New
 7. Banqiao Guanqian
 8. Yonghe Lehua
 9. Taoyuan Zhonghua
10. Taoyuan Nankan
11. Zhongli Zhongyang
12. Hsinchu Beida
13. Taichung Ziyou
14. Chiayi Renai
15. Tainan Ximen
16. Kaohsiung Zhonghua New

Enter your choice (0 to end): a

Enter your choice (0 to end): 17

Enter your choice (0 to end): 9

The current hour is 2019/11/24:14

Available days:

1. 2019/11/24
2. 2019/11/25
3. 2019/11/26
4. 2019/11/27
5. 2019/11/28
6. 2019/11/29
7. 2019/11/30

Enter your choice (0 to end): a

Enter your choice (0 to end): 8

Enter your choice (0 to end): 1

Enter hour (15~23): a

Enter hour (15~23): 14

Enter hour (15~23): 24

Enter hour (15~23): 15

Enter the number of customers (1~30, 0 to end): a

Enter the number of customers (1~30, 0 to end): 31

Enter the number of customers (1~30, 0 to end): 5

                    Branch          Date    Hour    No of Customers
          Taoyuan Zhonghua    2019-11-24      15                  5

Reservation Completed!

1 - Make Reservation
2 - Reservation Enquiry/Canceling
3 - End

Enter your choice (1~3): 2

                       Branch          Date    Hour    No of Customers
1.           Taoyuan Zhonghua    2019-11-24      15                  5

Choose a reservation to cancel (0: keep all reservations): a

Choose a reservation to cancel (0: keep all reservations): 2

Choose a reservation to cancel (0: keep all reservations): 0

1 - Make Reservation
2 - Reservation Enquiry/Canceling
3 - End

Enter your choice (1~3): 3

1 - Login
2 - Registration
3 - End

Enter your choice (1~3): 3

Thank you! Goodbye!

請按任意鍵繼續 . . .

參考解法

#include <iostream>
#include <iomanip>
#include <fstream>
#include <vector>
#include <ctime>
using namespace::std;

struct Date
{
	int year;
	int month;
	int day;
	int hour;
};

struct MemberRecord
{
	char IDNumber[12];   // account number
	char password[24];   // password
	char name[8];        // name
};

struct ReservationRecord
{
	char IDNumber[12]; // account number
	int branchCode;      // branch code
	Date date;           // reservation date
	int numCustomers;    // number of customers
};

char branchNames[17][24] = { "", "Taipei Dunhua South", "Taipei SOGO",
									 "Taipei Songjiang",    "Taipei Nanjing",
									 "Taipei Linsen",       "Taipei Zhonghua New",
									 "Banqiao Guanqian",    "Yonghe Lehua",
									 "Taoyuan Zhonghua",    "Taoyuan Nankan",
									 "Zhongli Zhongyang",   "Hsinchu Beida",
									 "Taichung Ziyou",      "Chiayi Ren'ai",
									 "Tainan Ximen",        "Kaohsiung Zhonghua New" };

// input memberDetails from the file Members.dat
void loadMemberDetails(vector< MemberRecord >& memberDetails);

// input reservations from the file Reservations.dat
void loadReservations(vector< ReservationRecord >& reservations);

// input an integer in the range [ begin, end ]
int inputAnInteger(int begin, int end);

// login and display the submenu
void login(const vector< MemberRecord >& memberDetails,
	vector< ReservationRecord >& reservations);

// there exists a member with specified IDNumber and password
bool valid(char IDNumber[], char password[],
	const vector< MemberRecord >& memberDetails);

// add a new reservation for the member with specified IDnumber
void reservation(char IDNumber[], vector< ReservationRecord >& reservations);

// compute the current date
void compCurrentDate(Date& currentDate);

// compute 7 dates which is starting from the current date
void compAvailableDates(Date currentDate, Date availableDates[]);

// display all fields of reservation
void output(ReservationRecord reservation);

// display all reservations for the member with specified IDnumber,
// then let the member to choose one of them to delete
void queryDelete(char IDNumber[], vector< ReservationRecord >& reservations);

// add a new member
void registration(vector< MemberRecord >& memberDetails);

// return true if IDNumber is a legal ID number
bool legalID(char IDNumber[]);

// return true if IDNumber belongs to memberDetails
bool existingID(char IDNumber[], const vector< MemberRecord >& memberDetails);

// output all memberDetails into the file Members.dat
void saveMemberDetails(const vector< MemberRecord >& memberDetails);

// output all reservations into the file Reservations.dat
void saveReservations(const vector< ReservationRecord >& reservations);

int main()
{
	vector< MemberRecord > memberDetails; // member details for all members
	vector< ReservationRecord > reservations; // all reservations

	loadMemberDetails(memberDetails);
	loadReservations(reservations);

	cout << "Welcome to the Cashbox Party World!\n\n";

	int choice;

	while (true)
	{
		cout << "1 - Login\n";
		cout << "2 - Registration\n";
		cout << "3 - End\n";

		do cout << "\nEnter your choice (1~3): ";
		while ((choice = inputAnInteger(1, 3)) == -1);
		cout << endl;



		switch (choice)
		{
		case 1:
			login(memberDetails, reservations);
			break;

		case 2:
			registration(memberDetails);
			break;

		case 3:
			saveMemberDetails(memberDetails);
			saveReservations(reservations);
			cout << "Thank you! Goodbye!\n\n";
			system("pause");
			return 0;

		default:
			cout << "\nIncorrect choice!\n";
			break;
		}
	}

	system("pause");
}

// input memberDetails from the file Members.dat
void loadMemberDetails(vector< MemberRecord >& memberDetails)
{
	fstream inFile("Members.dat", ios::in | ios::out | ios::binary);

	inFile.seekg(0, ios::end);

	// calculus the number of lines
	int numLine = inFile.tellg() / sizeof(memberDetails);

	// start from the beginning
	inFile.seekg(0, ios::beg);

	for (int i = 0; i < numLine; i++)
	{
		memberDetails.resize(numLine);
		inFile.read(reinterpret_cast<char*>(&memberDetails[i]), sizeof(memberDetails[i]));
	}

	inFile.clear();
}

// input reservations from the file Reservations.dat
void loadReservations(vector< ReservationRecord >& reservations)
{
	fstream inFile("Reservations.dat", ios::in | ios::out | ios::binary);

	inFile.seekg(0, ios::end);

	// calculus the number of reservations
	int numLine = inFile.tellg() / sizeof(reservations);

	// start from the beginning
	inFile.seekg(0, ios::beg);

	for (int i = 0; i < numLine; i++)
	{
		reservations.resize(numLine);
		inFile.read(reinterpret_cast<char*>(&reservations[i]), sizeof(reservations[i]));
	}
}

// input an integer in the range [ begin, end ]
int inputAnInteger(int begin, int end)
{
	char choice;

	vector<char>temp;

	int number = 0;

	cin >> choice;


	while (1)
	{
		if (choice == '\n')
		{
			break;
		}
		
		temp.resize(temp.size() + 1);
		temp[temp.size() - 1] = choice;
		cin.get(choice);
	}

	//turn character into integer
	for (int i = 0; i < temp.size(); i++)
	{
		number += (temp[i] - '0') * pow(10, (temp.size() - i - 1));
	}
		
	// if the option is between BEGIN and END
	if (number >= begin && number <= end)
	{
		return number;
	}
	
	else
	{
		return -1;
	}

	/*char choice = { 0 };

	cin >> choice;

	// if the option is between 1 and 3
	if (choice >= begin + '0' && choice <= end + '0')
	{
		return choice - '0';
	}

	// if the option isn't between 1 and 3
	else
	{
		return -1;
	}*/
}

// login and display the submenu
void login(const vector< MemberRecord >& memberDetails,
	vector< ReservationRecord >& reservations)
{
	MemberRecord temp;
	//char id[12] = { 0 };
	//char pw[24] = { 0 };

	cout << "Please enter your ID number :";
	cin >> temp.IDNumber;
	cout << endl;

	//if the id is legal and exist
	if (legalID(temp.IDNumber) == 1 && existingID(temp.IDNumber, memberDetails) == 1)
	{
		cout << "Enter your password :";
		cin >> temp.password;
		cout << endl;

		// if the password is right
		if (valid(temp.IDNumber, temp.password, memberDetails) == 1)
		{
			cout << "Login !" << endl;

			int choice;

			while (true)
			{
				cout << "1 - Make Reservation\n";
				cout << "2 - Reservation Enquiry/Canceling\n";
				cout << "3 - End\n";

				do cout << "\nEnter your choice (1~3): ";
				while ((choice = inputAnInteger(1, 3)) == -1);
				cout << endl;

				switch (choice)
				{
				case 1:
					reservation(temp.IDNumber, reservations);
					break;

				case 2:
					queryDelete(temp.IDNumber, reservations);
					break;

				case 3:
					return;

				default:
					cout << "\nIncorrect choice!\n";
					break;
				}
			}
		}

		else
		{
			cout << "Invalid account number or password. Please try again." << endl;
		}
	}

	else
	{
		cout << "The ID number " << temp.IDNumber << " is illegal." << endl;
	}


}

// there exists a member with specified IDNumber and password
bool valid(char IDNumber[], char password[],
	const vector< MemberRecord >& memberDetails)
{
	bool exist = true;
	int j;

	//start from the first data
	for (j = 0; j < memberDetails.size(); j++)
	{
		//start from the first character
		for (int i = 0; i < 10; i++)
		{
			// if the id is wrong then jump to the next data
			if (memberDetails[j].IDNumber[i] != IDNumber[i])
			{
				break;
			}

			// if the id is right then continue comparing the password
			if (i = 9)
			{
				int m;

				for (m = 0; m < 10; m++)
				{
					// if it is letter or number
					if ((memberDetails[j].password[m] > 64 && memberDetails[j].password[m] < 91)
						|| (memberDetails[j].password[m] > 47 && memberDetails[j].password[m] < 58))
					{
						//return false if the password isn't fit with id
						if (memberDetails[j].password[m] != password[m])
						{
							exist = false;
							return exist;
							break;
						}
					}

					else
					{
						return exist;
					}

				}

				if (m == 9)
				{
					return exist;
					break;
				}

			}
		}
	}

	if (j == (memberDetails.size() - 1))
	{
		exist = false;
		return exist;
	}
}

// add a new reservation for the member with specified IDnumber
void reservation(char IDNumber[], vector< ReservationRecord >& reservations)
{
	ReservationRecord temp;
	strcpy_s(temp.IDNumber, IDNumber);

	cout << "1. Taipei Dunhua South" << endl
		<< "2. Taipei SOGO" << endl
		<< "3. Taipei Songjiang" << endl
		<< "4. Taipei Nanjing" << endl
		<< "5. Taipei Linsen" << endl
		<< "6. Taipei Zhonghua New" << endl
		<< "7. Banqiao Guanqian" << endl
		<< "8. Yonghe Lehua" << endl
		<< "9. Taoyuan Zhonghua" << endl
		<< "10. Taoyuan Nankan" << endl
		<< "11. Zhongli Zhongyang" << endl
		<< "12. Hsinchu Beida" << endl
		<< "13. Taichung Ziyou" << endl
		<< "14. Chiayi Ren'ai" << endl
		<< "15. Tainan Ximen" << endl
		<< "16. Kaohsiung Zhonghua New" << endl;

	cout << endl;

	int choice;

	//enter the choice if the choice is not legal
	do cout << "\nEnter your choice (0 to end): ";
	while ((choice = inputAnInteger(0, 16)) == -1);

	//return if enter 0
	if (choice == 0)
	{
		return;
	}

	temp.branchCode = choice;
	
	//declaration of seven structures
	Date day[7];

	//compute current date
	Date currentDate;
	compCurrentDate(currentDate);

	//cout the current date
	cout << "\nThe current hour is " << currentDate.year << '/' 
		<< currentDate.month << '/' << currentDate.day << ':' << currentDate.hour << endl;

	//determine the available days
	cout << "Available days:" << endl;
	cout << endl;
	compAvailableDates(currentDate, day);

	for (int i = 0; i < 7; i++)
	{
		cout << (i + 1) << ". "
			<< day[i].year << "/"
			<< day[i].month << "/"
			<< day[i].day << endl;
	}

	cout << endl;


	//choose the day 
	int daychoice;

	//enter the choice if the choice is not legal
	do cout << "\nEnter your choice (0 to end): ";
	while ((daychoice = inputAnInteger(0, 7)) == -1);

	//return if enter 0
	if (daychoice == 0)
	{
		return;
	}
	
	temp.date = day[daychoice - 1];
	
	//choose the hour
	int hourchoice = currentDate.hour;

	//enter the choice if the choice is not legal
	do
	{
		hourchoice = currentDate.hour;
		cout << "\nEnter hour  (" << hourchoice << "~23): ";
	}
	while ((hourchoice = inputAnInteger(hourchoice, 23)) == -1);

	temp.date.hour = hourchoice;

	//choose the number of customers
	int numcust;

	//enter the choice if the choice is not legal
	do cout << "\nEnter the number of customers(1~30, 0 to end) : ";
	while ((numcust = inputAnInteger(0, 30)) == -1);

	//return if enter 0
	if (numcust == 0)
	{
		return;
	}

	temp.numCustomers = numcust;

	cout << endl;

	/*int n = 8;
	if (temp.date.day < 10)
		n++;*/

	cout << "                    Branch          Date    Hour    No of Customer" << endl;
	cout << setw(26) << right << branchNames[choice];
	cout << setw(8) << right << day[daychoice - 1].year 
		<< "-" << day[daychoice - 1].month << "-" << day[daychoice - 1].day;
	cout << setw(8) << right << hourchoice;
	cout << setw(18) << right << numcust << endl;
	cout << endl;
	cout << endl;
	cout << "Reservation Completed!" << endl;
	cout << endl;

	reservations.resize(reservations.size() + 1);
	reservations[reservations.size() - 1] = temp;
}

// compute the current date
void compCurrentDate(Date& currentDate)
{
	int second = static_cast<int>(time(0)) + 8 * 60 * 60;
	int days[13] = { 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
	int secondperyear = 365 * 24 * 60 * 60;

	currentDate.year = 1970;
	currentDate.month = 1;

	// determine whether 1970 is a leap year or not
	if ((currentDate.year % 4 == 0 && currentDate.year % 100 != 0) || (currentDate.year % 400 == 0))
	{
		secondperyear += 24 * 60 * 60;
	}

	//determine how many seconds of leap is are and the current year 
	while (second >= secondperyear)
	{
		second -= secondperyear;
		currentDate.year++;

		secondperyear = 365 * 24 * 60 * 60;

		if ((currentDate.year % 4 == 0 && currentDate.year % 100 != 0) || (currentDate.year % 400 == 0))
		{
			secondperyear += 24 * 60 * 60;
		}
	}

	//set feb = 29 days if it's leap year
	if ((currentDate.year % 4 == 0 && currentDate.year % 100 != 0) || (currentDate.year % 400 == 0))
	{
		days[2] = 29;
	}

	//determine the month
	while (second >= days[currentDate.month] * 24 * 60 * 60)
	{
		second -= days[currentDate.month] * 24 * 60 * 60;
		currentDate.month++;
	}

	//determine the day
	currentDate.day = second / (24 * 60 * 60) + 1;
	second %= 24 * 60 * 60;

	currentDate.hour = second / (60 * 60);
	second %= (60 * 60);
}

// compute 7 dates which is starting from the current date
void compAvailableDates(Date currentDate, Date availableDates[])
{
	int days[13] = { 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };

	// determine whether the year is leap year or not
	if ((currentDate.year % 4 == 0 && currentDate.year % 100 != 0) || (currentDate.year % 400 == 0))
	{
		days[2] = 29;
	}

	int year = currentDate.year;
	int month = currentDate.month;
	int day = currentDate.day;



	for (int i = 0; i < 7; i++)
	{
		availableDates[i].year = year;
		availableDates[i].month = month;
		availableDates[i].day = day;

		//if current date is the last day of the month
		if (day == days[month])
		{
			month++;
			day = 1;
		}

		//if current date is 12/31
		else if (month == 12 && day == 31)
		{
			year++;
			month = 1;
			day = 1;
		}

		else
		{
			day++;
		}
	}

}

// display all fields of reservation
void output(ReservationRecord reservation)
{
	/*int n = 8;
	if (reservation.date.day < 10)
		n++;*/

	cout << setw(27) << right << branchNames[reservation.branchCode];
	cout << setw(8) << right << reservation.date.year
		<< "-" << reservation.date.month << "-" << reservation.date.day;
	cout << setw(8) << right << reservation.date.hour;
	cout << setw(18) << right << reservation.numCustomers << endl;
	
}

// display all reservations for the member with specified IDnumber,
// then let the member to choose one of them to delete
void queryDelete(char IDNumber[], vector< ReservationRecord >& reservations)
{
	vector<int> IDposition;

	cout << setw(30) << "Brach" << setw(14) << "Date" << setw(8) << "Hour" << setw(19) << "No of Customers" << endl;


	for (int i = 0; i < reservations.size(); i++)
	{
		if (strcmp(reservations[i].IDNumber, IDNumber) == 0)
		{
			cout << IDposition.size() + 1 << ". ";
			output(reservations[i]);
			IDposition.resize(IDposition.size() + 1);
			IDposition[IDposition.size() - 1] = i;
		}
	}
		
	//delete the reservation
	int choice;

	do cout << "\nChoose a reservation to cancel (0: keep all reservations): ";
	while ((choice = inputAnInteger(0, IDposition.size())) == -1);

	if (choice == 0)
	{
		return;
	}
	
	reservations.erase(reservations.begin() + IDposition[choice - 1]);

	//cout << "                       Branch          Date    Hour    No of Customers" << endl;

	cout << endl;
	cout << "Reservation deleted!" << endl;
	cout << endl;

}

// add a new member
void registration(vector< MemberRecord >& memberDetails)
{
	char id[12] = { 0 };

	cout << "Input your ID number:";
	cin >> id;
	cout << endl;

	//if the id isn't legal
	if (legalID(id) == 0)
	{
		cout << "The ID number " << id << " is illegal." << endl;
	}

	else
	{
		bool member = false;

		//start from the first data
		for (int i = 0; i < memberDetails.size(); i++)
		{
			// if the id is already exist cout "you are already a member"
			if (strcmp(id, memberDetails[i].IDNumber) == 0)
			{
				cout << "You are already a member!" << endl;
				member = true;
				break;
			}
		}

		if (member == false)
		{
			char name[8] = { 0 };
			char pw[34] = { 0 };

			cout << "Input your name:";
			cin >> name;
			cout << endl;
			cout << "Choose a password:";
			cin >> pw;

			//save the data into structure temp
			struct MemberRecord temp;

			strcpy_s(temp.IDNumber, id);
			strcpy_s(temp.password, pw);
			strcpy_s(temp.name, name);

			memberDetails.push_back(temp);

			cout << "Registration Completed!" << endl;
		}
	}
}

// return true if IDNumber is a legal ID number
bool legalID(char IDNumber[])
{
	int local = 0;
	int idnum[26] = { 10,11,12,13,14,15,16,17,34,18,19,20,21,22,35,23,24,25,26,27,28,29,32,30,31,33 };

	//turn the first letter into number
	for (int i = 0; i < 26; i++)
	{
		if (IDNumber[0] == (65 + i))
		{
			local = idnum[i];
		}

	}

	int total = 0;

	total = (local % 10) * 9 + (local / 10) + (IDNumber[1] - '0') * 8
		+ (IDNumber[2] - '0') * 7 + (IDNumber[3] - '0') * 6 + (IDNumber[4] - '0') * 5
		+ (IDNumber[5] - '0') * 4 + (IDNumber[6] - '0') * 3 + (IDNumber[7] - '0') * 2 + (IDNumber[8] - '0') * 1;

	//return true if the id accrods with standards
	if ((IDNumber[9] - '0') == total % 10 || (IDNumber[9] - '0') == (10 - (total % 10)))
	{
		return true;
	}

	else
	{
		return false;
	}
}

// return true if IDNumber belongs to memberDetails
bool existingID(char IDNumber[], const vector< MemberRecord >& memberDetails)
{
	bool exist = true;
	int j;

	//start from the first data
	for (j = 0; j < memberDetails.size(); j++)
	{
		for (int i = 0; i < 10; i++)
		{
			//if the id isn't identical, jump to the next data
			if (memberDetails[j].IDNumber[i] != IDNumber[i])
			{
				break;
			}

			//return true if the id is identical 
			if (i = 9)
			{
				return exist;
				break;
			}
		}
	}

	if (j == (memberDetails.size() - 1))
	{
		exist = false;
		return exist;
	}
}

// output all memberDetails into the file Members.dat
void saveMemberDetails(const vector< MemberRecord >& memberDetails)
{
	fstream inFile("Members.dat", ios::in | ios::out | ios::binary);

	for (int i = 0; i < memberDetails.size(); i++)
	{
		inFile.write(reinterpret_cast<const char*>(&memberDetails[i]), sizeof(memberDetails[i]));
	}

	inFile.clear();
}

// output all reservations into the file Reservations.dat
void saveReservations(const vector< ReservationRecord >& reservations)
{
	fstream inFile("Members.dat", ios::in | ios::out | ios::binary);

	for (int i = 0; i < reservations.size(); i++)
	{
		inFile.write(reinterpret_cast<const char*>(&reservations[i]), sizeof(reservations[i]));
	}

	inFile.clear();
}