Question

This program is in C++ which reserves flight seats. It uses a file imported to get the seat chart called "chartIn.txt" which looks like this

1 A B C D E F

2 A B C D E F

It continues until row 10.

Sorry unable to provide the chartIn.txt file.

I am having issues with function displaySeats, it displays then but when it comes to 10 the row looks like this 1 0 A B C D E , it shifts everything over and looses F. I believe when entering the seat like 2B it support to be a string not a char and int which I did, maybe that's the problem. In reserveSeats I'm in a loop when they entered the seat correctly or it prints "Your seat was successfully reserved" ten likes or more. In the cancel function I'm not sure how to reassign the seat back after it's been cancelled. And I need some major help in case 5 which is the stats . A file called statistics.txt with the same information is produced. number of available seats, number or reserves seats, percent of seats available and reserved. list of available seats and list of reserved seats is list. Thank you for the help.

#include<iostream>
#include<string>
#include<fstream>
#include<cstdlib>


const int ROWS = 10; //for rows in airplane
const int COLS = 7;

//protypes for functions
void welcome(); //welcome function
void checkUser(valid_user);
void menu(); //displays options
void Quit();
void help();
void displaySeats(char[][COLS]);
void reserveSeat(char[][COLS]);
void SaveFile(char[][COLS]);
void cancel(char[][COLS]);

int main() {

ifstream eds; //used to write systemUser
ofstream pds; //used to read text


int number=0; //holder variable
string first, last, user, pass;
char seatChar[ROWS][COLS];

int choice; //input from menu
struct valid_user infor[4];
string outFile; //used for name of file from user
welcome();
string inFile;

bool repeat = true; //needed for switch loop

while (repeat = true) {
menu();
cout << "-----------------------" << endl;
cout << "Please enter Your Choice (1-7): " << endl;
cin >> choice;
cout << "----------------------" << endl;

switch (choice) {

case 1:
cout << "Seating chart looks like this:" << endl;
displaySeats(seatChar);
break;

case 2:
reserveSeat(seatChar);
break;


case 3:
cancel(seatChar);
break;

case 4:
SaveFile(seatChar);
break;

case 5:
break;


case 6:

help();
break;

case 7:

repeat = false;
Quit();
break;

default:
cout << "You need to enter a number 1-7" << endl;



}//end of switch


}




eds.close();
pds.close();
system ("pause");

return 0;
}

void welcome() {
cout << "---------------------------------------" << endl;
cout << " WELCOME TO AIR TICKETS SYSTEM " << endl;
cout << "---------------------------------------" << endl;


}

void menu() {

cout << "---------------------------------------" << endl;
cout << " WELCOME TO AIR TICKETS SYSTEM " << endl; //needs to add user first and last name
cout << "---------------------------------------" << 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;


}

void Quit()
{
cout << "Thank You!" << endl;
cout << "Enjoy your Flight" << endl;
system("pause");
exit(0); //Exit the program
}


void help(){
cout << "LOOKS LIKE YOU NEED A LITTLE HELP!!!" << endl;
cout << endl;
cout << "Option 1 Displays the avaible seats " << endl;
cout << "Option 2 Helps you find an avaiable seat to reserve " << endl;
cout << "Option 3 Cancels your reservation " << endl;
cout << "Option 4 Updates the seating chart file " << endl;
cout << "Option 5 Provides all the information about avaiable and reserved seats for flight " << endl;
cout << "Option 6 Brings you back to this screen " << endl;
cout << "Option 7 Quits the program " << endl;
}

void displaySeats(char seats[ROWS][COLS] ) {
ofstream pds;
ifstream eds;
char letters[ROWS] = "ABCDEF";
char letter;

eds.open("chartIn.txt");
if (eds.fail()) {
cout << "Unable to open chartIn.txt" << endl;
cout << "Default to orignal seating chart" << endl;
cout << endl;

cout << "Window" << "\t" << "Center" << "\t" << "Aisle" << "\t" << "Aisle" << "\t" << "Center" << "\t" << "Window" << endl;

for (int i = 0; i < ROWS; i++) {

//trying something from letter
letter = letters[ROWS];
for (int j = 0; j < COLS; j++) {
seats[letter][COLS] = '0';

}

}
}




else {

//FIX ROW TENNNN
cout << "\t\t" << "Window" << "\t" << "Center" << "\t" << "Aisle" << "\t" << "Aisle" << "\t" << "Center" << "\t" << "Window" << endl;
for (int i = 0; i < ROWS; i++) {
cout << "\t";
for (int j = 0; j < COLS; j++) {
if (eds.eof())
break; //ends loop at eof

eds >> seats[i][j];
cout << seats[i][j] << " \t";
if (seats[i][j] == 'F') {
cout << endl;
}
}

}
cout << endl;
}

}

void reserveSeat(char seat[ROWS][COLS]) {
int row;
char col;
cout << "Pleae enter a seat in the form ROW 1-10 and LETTER A-F [example 2B]: " << endl;
cin >> row >> col;
col = toupper(col);

while (((row > ROWS) || (row <= 0)) &&((col != 'A' || 'B'||'C'||'D'||'E'||'F'))) {
cout << "You entered a seat that does not exist!!" << endl;
cout << "Pleae try again" << endl;
cout << "Please enter a number 1-10 for the row and a letter A-F for the column: " << endl;
cin >> row >> col;
col = toupper(col);

}


//for (int i = 0; i < ROWS; i++) {
//for (int j = 0; j < COLS; j++) {
//if (i == col) {
if (seat[row][col] == 'X') {
do {
cout << "Seat is already taken." << endl;
cout << "Please try again!" << endl;
cout << "Pleae enter a seat in the form ROW 1-10 and LETTER A-F [example 2B]: " << endl;
cin >> row >> col;
col = toupper(col);

//DOUBLE GO OVER THIS WHEN CAN USE A FILE

while (((row > ROWS) || (row <= 0)) && ((col != 'A' || 'B' || 'C' || 'D' || 'E' || 'F'))) {
cout << "You entered a seat that does not exist!!" << endl;
cout << "Pleae try again" << endl;
cout << "Please enter a number 1-10 for the row and a letter A-F for the column: " << endl;
cin >> row >> col;
col = toupper(col);

}


//repeats until seat is not taken
} while (seat[row][col] != 'X');
}


// }//end of second if
else {
seat[row][col] = 'X';
cout << "Your seat was sucessful reserved!" << endl;
//break;
} //end of else



// }
}


//}//end of function


void SaveFile(char seat[ROWS][COLS]) {
ifstream eds;
ofstream pds;

string outFile; //file name from user

cout << "What is the name of the file you would like to open?" << endl;
cout << "Enter file name: " << endl;
cin >> outFile;

eds.open(outFile.c_str());
pds.open("chartIn.txt");
for (int i = 0; i < ROWS; i++) {
for (int j = 0; j < COLS; j++) {
pds << seat[i][j];
pds << " ";
if (j = 7) {
pds << endl;
}


}
}



}
//Program/Function Name: Cancel

void cancel(char seat[ROWS][COLS]) {
int row;
char col;

cout << "Sorry to hear you want to cancel your flight" << endl;
cout << "Please enter you seat you'd like to cancel in format, rows 1-10 and column A-F [example 2C]: "<<endl;
cin >> row >> col;
col= toupper(col);

while (((row > ROWS) || (row <= 0)) && ((col != 'A' || 'B' || 'C' || 'D' || 'E' || 'F'))) {

cout << "That seat is not valid!!" << endl;
cout << "Pleae try again" << endl;
cout << "Please enter a number 1-10 for the row and a letter A-F for the column: " << endl;
cin >> row >> col;
col = toupper(col);


}

if (seat[row][col] != 'X') {
do {
cout << "Error, you entered a seat that has not be reserved yet!" << endl;
cout << "Try again" << endl;
cout << "Please enter a number 1-10 for the row and a letter A-F for the column: " << endl;
cin >> row >> col;
col = toupper(col);
} while (seat[row][col] != 'X');

//cancelling seat



cout << "You cancelled seat: " << row << col << endl;


}//exit after entering resevered seat


//cancel seat when user typed in correctly
else {



}
}

Answer 1

you are storing characters in an array, so it will print single character. Better to take first element as an integer in each line followed by characters. Here it should look like

void displaySeats(char seats[ROWS][COLS] ) {

.

.

int num=0;      
       for (int i = 0; i < ROWS; i++) {
           cout << "\t";
           for (int j = 0; j < COLS; j++) {
               if (eds.eof())
                   break; //ends loop at eof

               if(j==0)
               {
                   eds>>num;
                   cout<<num<<"\t";
               }
               else
               {              
                   eds >> seats[i][j];
                   cout << seats[i][j] << " \t";
               }
               if (seats[i][j] == 'F') {
                   cout << endl;
               }
           }

       }
       cout << endl;

}

********************************

when you run the application the output be like

---------------------------------------
WELCOME TO AIR TICKETS SYSTEM
---------------------------------------
---------------------------------------
WELCOME TO AIR TICKETS SYSTEM
---------------------------------------
1. Display Seat Chart
2. Reserve Seat
3. Cancel Reservation
4. Save Seat Chart to File
5. Statistics
6. Help
7. Quit
-----------------------
Please enter Your Choice (1-7):
1
----------------------
Seating chart looks like this:
       Window   Center   Aisle   Aisle   Center   Window
   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   

---------------------------------------
WELCOME TO AIR TICKETS SYSTEM
---------------------------------------
1. Display Seat Chart
2. Reserve Seat
3. Cancel Reservation
4. Save Seat Chart to File
5. Statistics
6. Help
7. Quit
-----------------------
Please enter Your Choice (1-7):

************************* here is the entire code

#include<iostream>
#include<string>
#include<fstream>
#include<cstdlib>

using namespace std;
const int ROWS = 10; //for rows in airplane
const int COLS = 7;

//protypes for functions
void welcome(); //welcome function
//void checkUser(valid_user);
void menu(); //displays options
void Quit();
void help();
void displaySeats(char[][COLS]);
void reserveSeat(char[][COLS]);
void SaveFile(char[][COLS]);
void cancel(char[][COLS]);

int main()
{

   ifstream eds; //used to write systemUser
   ofstream pds; //used to read text

   int number=0; //holder variable
   string first, last, user, pass;
   char seatChar[ROWS][COLS];

   int choice; //input from menu
//   struct valid_user infor[4];
   string outFile; //used for name of file from user
   welcome();
   string inFile;

   bool repeat = true; //needed for switch loop

   while (repeat = true)
   {
       menu();
       cout << "-----------------------" << endl;
       cout << "Please enter Your Choice (1-7): " << endl;
       cin >> choice;
       cout << "----------------------" << endl;

       switch (choice) {

           case 1:
           cout << "Seating chart looks like this:" << endl;
           displaySeats(seatChar);
           break;

           case 2:
           reserveSeat(seatChar);
           break;

           case 3:
           cancel(seatChar);
           break;

           case 4:
           SaveFile(seatChar);
           break;

           case 5:
           break;

           case 6:

           help();
           break;

           case 7:

           repeat = false;
           Quit();
           break;

           default:
           cout << "You need to enter a number 1-7" << endl;
       }//end of switch

   }

   eds.close();
   pds.close();
   system ("pause");

   return 0;
}

void welcome() {
   cout << "---------------------------------------" << endl;
   cout << " WELCOME TO AIR TICKETS SYSTEM " << endl;
   cout << "---------------------------------------" << endl;
}

void menu() {

   cout << "---------------------------------------" << endl;
   cout << " WELCOME TO AIR TICKETS SYSTEM " << endl; //needs to add user first and last name
   cout << "---------------------------------------" << 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;
}

void Quit()
{
   cout << "Thank You!" << endl;
   cout << "Enjoy your Flight" << endl;
   system("pause");
   exit(0); //Exit the program
}

void help(){
   cout << "LOOKS LIKE YOU NEED A LITTLE HELP!!!" << endl;
   cout << endl;
   cout << "Option 1 Displays the avaible seats " << endl;
   cout << "Option 2 Helps you find an avaiable seat to reserve " << endl;
   cout << "Option 3 Cancels your reservation " << endl;
   cout << "Option 4 Updates the seating chart file " << endl;
   cout << "Option 5 Provides all the information about avaiable and reserved seats for flight " << endl;
   cout << "Option 6 Brings you back to this screen " << endl;
   cout << "Option 7 Quits the program " << endl;
}

void displaySeats(char seats[ROWS][COLS] ) {
   ofstream pds;
   ifstream eds;
   char letters[ROWS] = "ABCDEF";
   char letter;

   eds.open("chartIn.txt");
   if (eds.fail()) {
       cout << "Unable to open chartIn.txt" << endl;
       cout << "Default to orignal seating chart" << endl;
       cout << endl;

       cout << "Window" << "\t" << "Center" << "\t" << "Aisle" << "\t" << "Aisle" << "\t" << "Center" << "\t" << "Window" << endl;

       for (int i = 0; i < ROWS; i++) {

       //trying something from letter
           letter = letters[ROWS];
           for (int j = 0; j < COLS; j++) {
               seats[letter][COLS] = '0';

           }

       }
   }

   else {

       //FIX ROW TENNNN
       cout << "\t\t" << "Window" << "\t" << "Center" << "\t" << "Aisle" << "\t" << "Aisle" << "\t" << "Center" << "\t" << "Window" << endl;
       int num=0;      
       for (int i = 0; i < ROWS; i++) {
           cout << "\t";
           for (int j = 0; j < COLS; j++) {
               if (eds.eof())
                   break; //ends loop at eof

               if(j==0)
               {
                   eds>>num;
                   cout<<num<<"\t";
               }
               else
               {              
                   eds >> seats[i][j];
                   cout << seats[i][j] << " \t";
               }
               if (seats[i][j] == 'F') {
                   cout << endl;
               }
           }

       }
       cout << endl;
   }

}

void reserveSeat(char seat[ROWS][COLS]) {
   int row;
   char col;
   cout << "Pleae enter a seat in the form ROW 1-10 and LETTER A-F [example 2B]: " << endl;
   cin >> row >> col;
   col = toupper(col);

   while (((row > ROWS) || (row <= 0)) &&((col != 'A' || 'B'||'C'||'D'||'E'||'F'))) {
       cout << "You entered a seat that does not exist!!" << endl;
       cout << "Pleae try again" << endl;
       cout << "Please enter a number 1-10 for the row and a letter A-F for the column: " << endl;
       cin >> row >> col;
       col = toupper(col);

   }

   //for (int i = 0; i < ROWS; i++) {
   //for (int j = 0; j < COLS; j++) {
   //if (i == col) {
   if (seat[row][col] == 'X') {
       do {
           cout << "Seat is already taken." << endl;
           cout << "Please try again!" << endl;
           cout << "Pleae enter a seat in the form ROW 1-10 and LETTER A-F [example 2B]: " << endl;
           cin >> row >> col;
           col = toupper(col);

           //DOUBLE GO OVER THIS WHEN CAN USE A FILE

           while (((row > ROWS) || (row <= 0)) && ((col != 'A' || 'B' || 'C' || 'D' || 'E' || 'F'))) {
               cout << "You entered a seat that does not exist!!" << endl;
               cout << "Pleae try again" << endl;
               cout << "Please enter a number 1-10 for the row and a letter A-F for the column: " << endl;
               cin >> row >> col;
               col = toupper(col);

           }

       //repeats until seat is not taken
       } while (seat[row][col] != 'X');
   }

   // }//end of second if
   else {
       seat[row][col] = 'X';
       cout << "Your seat was sucessful reserved!" << endl;
       //break;
   } //end of else

   // }
}

//}//end of function

void SaveFile(char seat[ROWS][COLS]) {
   ifstream eds;
   ofstream pds;

   string outFile; //file name from user

   cout << "What is the name of the file you would like to open?" << endl;
   cout << "Enter file name: " << endl;
   cin >> outFile;

   eds.open(outFile.c_str());
   pds.open("chartIn.txt");
   for (int i = 0; i < ROWS; i++) {
       for (int j = 0; j < COLS; j++) {
           pds << seat[i][j];
           pds << " ";
           if (j = 7) {
               pds << endl;
           }

       }
   }

}
//Program/Function Name: Cancel

void cancel(char seat[ROWS][COLS]) {
   int row;
   char col;

   cout << "Sorry to hear you want to cancel your flight" << endl;
   cout << "Please enter you seat you'd like to cancel in format, rows 1-10 and column A-F [example 2C]: "<<endl;
   cin >> row >> col;
   col= toupper(col);

   while (((row > ROWS) || (row <= 0)) && ((col != 'A' || 'B' || 'C' || 'D' || 'E' || 'F'))) {

       cout << "That seat is not valid!!" << endl;
       cout << "Pleae try again" << endl;
       cout << "Please enter a number 1-10 for the row and a letter A-F for the column: " << endl;
       cin >> row >> col;
       col = toupper(col);

   }

   if (seat[row][col] != 'X') {
       do {
           cout << "Error, you entered a seat that has not be reserved yet!" << endl;
           cout << "Try again" << endl;
           cout << "Please enter a number 1-10 for the row and a letter A-F for the column: " << endl;
           cin >> row >> col;
           col = toupper(col);
       } while (seat[row][col] != 'X');

   //cancelling seat

   cout << "You cancelled seat: " << row << col << endl;

   }//exit after entering resevered seat

   //cancel seat when user typed in correctly
   else {

   }
}

*******************************chartIn.txt

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