In C++

I have code here and I want to know how I can extend this to process airplanes of any size create (any number of rows and columns) and use a seat object to write the program. Menu options 2&3 must be methods of that object.

#include

#include

#include

#include

#include

using namespace std;

void displayMenu(); // this functions displays the menu of options

void readChart(); // this function's job is to read the file into the arrays

void displayChart(); // this function's job is to display the chart that is created of the arrays

void reserveSeat(); // this function's job is to reserve a seat entered by the user

void cancelReservation(); // this function's job is to cancel a seat entered by the user

void saveChartToFile(); // this functions job is to save the chart into a file

void showStatistics(); // this function's job is to show statistics

void help(); // this function's job is to display a detailed message on how to use the program

void quit(); // this function's job is to display a thank you message and terminates

void displayInvalid(); // this function's job is to display the invalid message in case if other numbers than 1-7 entered

void extractSeatNum(int&, int&, string&); // this function's job is to extract the seat number

int choice; // choice number

const int ROWS = 99; // maximum number of rows in the airplan

const int COLS = 8; // maximum number of columns in the airplan

char chart[ROWS][COLS]; //this array is for letters only

int chart2[ROWS]; // this array for the number of rows

int numOfRows; // number of rows in the airplan

int numOfCols; // number of columns in the airplan

ifstream myInputFile; // name of the veriable of the file we import

ofstream myOutputFile; // name of the veriable of the file we export

int main()

{

myInputFile.open("chartIn.txt"); // to open the file

readChart(); // read file and store values in the array

myInputFile.close(); // close the file

do

{

displayMenu();

switch (choice)

{

case 1:

displayChart();

break;

case 2:

reserveSeat();

break;

case 3:

cancelReservation();

break;

case 4:

saveChartToFile();

break;

case 5:

showStatistics();

break;

case 6:

help();

break;

case 7:

quit();

break;

default:

displayInvalid();

break;

}

cout << endl; // to give an extra line before the next display

} while (choice != 7);

//system("Pause"); note that, this omited because I am using the sleep code inside the quit function

return 0;

}

void displayMenu()

{

cout << "----------------------------Menu --------------------------" << endl;

cout << "1. Display Seat Chart" << endl;

cout << "2. Reserve Seat" << endl;

cout << "3. Cancel Reservation" << endl;

cout << "4. Save Seat Chart to File" << endl;

cout << "5. Statistics" << endl;

cout << "6. Help" << endl;

cout << "7. Quit" << endl;

cout << "Please Enter You Choice (1-7): ";

cin >> choice;

cout << "-----------------------------------------------------------" << endl;

}

void readChart()

{

int rowNumber;

myInputFile >> numOfRows >> numOfCols; // this reads the first two numbers on the top of the file we import

// which are the number of rows and number of columns

while (!myInputFile.eof())

{

myInputFile >> rowNumber;

chart2[rowNumber] = rowNumber; // this reads the numbers of rows and will put it inside the chart2 array

for (int j = 0; j < numOfCols; j++)

myInputFile >> chart[rowNumber][j]; // this reads the letters and stores then inside the chart array

}

}

void displayChart()

{

for (int i = 0; i < numOfRows; i++) // this indicates the rows

{

// this if function is to put spaces between the numbers and the letters A's

if (chart2[i + 1] >= 10) // since the first line in file indacates the number of rows and columns, then +1 is to start from the next line

cout << chart2[i + 1] << " ";

else

cout << chart2[i + 1] << " ";

for (int j = 0; j < numOfCols; j++) // this indicates the colums

cout << chart[i + 1][j] << " ";

cout << endl;

}

}

void reserveSeat()

{

int rowR, colR;

string seatR;

cout << "Please enter the desired seat number as (e.g., 3A, 7D, etc.): ";

cin >> seatR;

extractSeatNum(rowR, colR, seatR); // this function to extract the seat number

if (chart[rowR][colR] != 'X') // if the function is not resereved

{

chart[rowR][colR] = 'X';

cout << "Seat " << seatR << " was successfully reserved." << endl;

}

else

{

cout << "Sorry! seat " << seatR << " is not available. Please choose another seat" << endl;

}

}

void cancelReservation()

{

int rowC, colC;

string seatC;

cout << "Please enter the seat number you want to cancel (e.g., 3A, 7D, etc.): ";

cin >> seatC;

extractSeatNum(rowC, colC, seatC);

if (chart[rowC][colC] != 'X') // if the seat is not resereved

cout << "The seat " << seatC << " that you to cancel has not been initially reserved" << endl;

else

{

switch (colC) // assinging the index of the letter to the letter

{

case 0:

chart[rowC][0] = 'A';

break;

case 1:

chart[rowC][1] = 'B';

break;

case 2:

chart[rowC][2] = 'C';

break;

case 3:

chart[rowC][3] = 'D';

break;

case 4:

chart[rowC][4] = 'E';

break;

case 5:

chart[rowC][5] = 'F';

break;

case 6:

chart[rowC][6] = 'G';

break;

case 7:

chart[rowC][7] = 'H';

break;

default:

break;

}

cout << "Seat " << seatC << " was successfully canceled." << endl;

}

}

void saveChartToFile()

{

string fileName;

cout << "please name the file with its extention as (e.g., file.txt, chart.txt, etc.): ";

cin >> fileName;

myOutputFile.open(fileName); // opens that file

for (int i = 0; i < numOfRows; i++)

{

// this if function is to put spaces between the numbers and the letters A's

if (chart2[i + 1] >= 10) // again the +1 is becasuse the top line with 0 index in the file, indicates the number of rows and columns

myOutputFile << chart2[i + 1] << " ";

else

myOutputFile << chart2[i + 1] << " ";

for (int j = 0; j < numOfCols; j++)

myOutputFile << chart[i + 1][j] << " ";

myOutputFile << endl;

}

cout << endl;

cout << "File has been saved as " << fileName;

myOutputFile.close(); // closes the file

}

void showStatistics()

{

int totalSeatsNum = 0;

int totalSeatsResereved = 0;

float totalAvailableSeats = 0;

int totalWindowSeats = 0;

int totalAisleSeats = 0;

float PerOfReserevedSeats;

char rightWindowSeat; // this is a place holder for the right column

switch (numOfCols) // this code to store the data for the right column

{

case 2:

rightWindowSeat = 'B';

break;

case 3:

rightWindowSeat = 'C';

break;

case 4:

rightWindowSeat = 'D';

break;

case 5:

rightWindowSeat = 'E';

break;

case 6:

rightWindowSeat = 'F';

break;

case 7:

rightWindowSeat = 'G';

break;

case 8:

rightWindowSeat = 'H';

break;

default:

break;

}

for (int i = 0; i < numOfRows; i++)

{

for (int j = 0; j < numOfCols; j++)

{

totalSeatsNum++; // to count total num of seats

if (chart[i + 1][j] == 'X')

totalSeatsResereved++; // to count resreved seats

else

totalAvailableSeats++; // to count available seats

if (chart[i + 1][j] == 'A' || chart[i + 1][j] == rightWindowSeat)

totalWindowSeats++; // to count window seats

if (chart[i + 1][j] != 'A' && chart[i + 1][j] != 'X' && chart[i + 1][j] != rightWindowSeat)

totalAisleSeats++; // to count aisle seats

}

}

PerOfReserevedSeats = totalSeatsResereved / totalAvailableSeats * 100.0; // percentage of resereved seats

cout << "Number of available seats is: " << totalAvailableSeats << endl;

cout << "Percentage of seats that are reserved: " << PerOfReserevedSeats << "%" << endl;

cout << "Number of window seats that are available: " << totalWindowSeats << endl;

cout << "Number of aisle seats that are available: " << totalAisleSeats << endl;

}

void help()

{

cout << "Press a number between one and seven" << endl;

cout << "Press 1 to display the seat chart" << endl

<< "Press 2 to to reserve a seat. You need to enter seat number as (e.g., 3A, 7D, etc.) " << endl

<< "Press 3 to to to cancel a seat. You need to enter seat number as (e.g., 3A, 7D, etc.)" << endl

<< "Press 4 to to save the chart into a file. Enter file name with its extention as (e.g., file.txt, chart.txt, etc.)s " << endl

<< "Press 5 to to display the following statistics: Number of available seats, percentage of seats that are reserved, list of window seats that are available, list of aisle seats that are available." << endl

<< "Press 6 to to display help and a detailed message on how to use the program" << endl

<< "Press 7 to quit and terminate the program" << endl;

}

void quit()

{

cout << "Thank you for using our program";

}

void displayInvalid()

{

cout << "Invalid choice. You need to select an option between 1 and 7" << endl;

}

void extractSeatNum(int& row, int& col, string& seat)

{

string fragment1, fragment2; // two fragmnets in a string such as 7D has 7 and D

if (seat.length() == 2)

{

fragment1 = seat.substr(0, 1); // extract the first fragment such as 7 in 7D

fragment2 = seat.substr(1, 1); // to extract the second fragment such as D in 7D

}

else if (seat.length() == 3)

{

fragment1 = seat.substr(0, 2); // extract the first fragment such as 10 in 10A

fragment2 = seat.substr(2, 1); // to extract the second fragment such as A in 10A

}

else

{

cout << "invalid seat";

row = -1;

col = -1;

}

row = atoi(fragment1.c_str()); // this to convert the string numbers to int numbers

switch (fragment2.at(0)) // this to convert the letter to the index of the columns

{

case 'A':

case 'a':

col = 0;

break;

case 'B':

case 'b':

col = 1;

break;

case 'C':

case 'c':

col = 2;

break;

case 'D':

case 'd':

col = 3;

break;

case 'E':

case 'e':

col = 4;

break;

case 'F':

case 'f':

col = 5;

break;

case 'G':

case 'g':

col = 6;

break;

case 'H':

case 'h':

col = 7;

break;

default:

break;

}

}

chartIn.txt

12 6 1 A B C D E F 2 A B C D E F 3 A B C D E F 4 A B C D E F 5 A B C D E F 6 A B C D E F 7 A B C D E F 8 A B C D E F 9 A B C D E F 10 A B C D E F 11 A B C D E F 12 A B C D E F