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Airline Reservations help

kdillon56 (12)
Hello,
I am having all types of issues with writing this program. I don't really know where to go from here on fixing it and I just read over the requirements for the assignment again and I missed the first time that the prices for the seats need to be opened from a file and stored as an array of doubles. If you can help me please I would really appreciate it. Thank you!

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#include <iostream>
#include <string>
#include <fstream>
#include <ctime>
#include <cstdlib>
using namespace std;

void begin();
void menu();
void checkSeat();
void printTicket();
const int first = 1000;
const int economy = 500; 
const int rows = 9;
const int col = 5;
const int size = 50;
char seat[rows][col];
double price, discount;
string type, sname, name[rows][col];
bool answer;

void begin()
{
    char letters[11] = "ABCDEFGHIJ";
    char letter;
	for ( int row = 0; row < rows; row++ )
    {
        letter = letters[row];
        col < 5;
        col ++;
	}
}

void menu()
{
	cout << "Please choose one of the following:\n ";
    cout << "1. First Class seating\n";
    cout << "2. Economy seating\n";
    cout << "3. Seating allocation\n";
    cout << "4. Ticket holder\n";
}

void checkSeat()
{
	char reply;
	cout << "Enter name:";
    cin >> sname;
    cout << "Do you want a specific seat:(y/n) : ";
    cin >> reply;
    if( reply == 'y' )
	{
		begin();
        cout << "Enter seat: \n";
        cin >> seat[rows][col];
       
		if(seat[rows][col] == 'X')
		{
			seat[rows][col] = 'X';
            name[rows][col] = sname;
        }
        else
        {
			int x = rand()%rows;
            int y = rand()%col;
            while(seat[x][y] == 'X');
                {
					int x = rand()%rows;
                    int y = rand()%col;
                }
				seat[rows][col] = 'X';
                name[rows][col] = sname;
        }
      }
      else
      {
		  begin();
          int rows = rand()%rows;
          int columns = rand()%columns;
          while ( seat[rows][columns] = 'X')
          {
			  int rows = rand()%rows;
              int columns = rand()%columns;
          }
		  seat[rows][columns] = 'X';
          name[rows][columns] = sname;
      }
}

void printTicket()
{
	cout <<"Name: " << name << endl;
    cout << "Seat No: " << seat << endl;
    cout << "Ticket type: " << type << endl;
    cout << "price: " << price << endl;
}
       
int main()
{
	int choice;
    srand(time(NULL));
    count < 50;
    count ++;
	{
		menu();
        cin >> choice;
        switch (choice)
		{
			case 1:  type = "First class";
			begin();
			int rows = 9;
			{
				checkSeat();
                bool isleSeat1 = seat[rows][1];
                bool isleSeat2 = seat[rows][2];
                if ( isleSeat1 == true || isleSeat2 == true )
				{
					discount = 10 / 100 * first;
                    price = first - discount;
				}
				else
				{
					price = first;
                }
             }
				break;
                case 2:  type = "Economy";
                begin();
				while( rows > 2 )
				{
					checkSeat();
                    bool isleSeat1 = seat[rows][1];
                    bool isleSeat2 = seat[rows][2];
					if ( isleSeat1 == true || isleSeat2 == true )
					{
						discount = 10 / 100 * first;
                        price = first - discount;
					}
					else
					{
						price = first;
                    }
                 }
					break;
                    case 3:  
				    printTicket();
                    break;
                    case 4: default: cout << "Incorrect. Choose between 1-4 \n";
          }
       }
            return 0;
}
wildblue (1505)
These are the compiler errors/warnings I'm getting on the code.

line 29 does nothing
line 30 - col is a const int variable - you can't change its value as you do here
lines 67-68 declare new variables that aren't used
line 79 - you probably want == here, not =
line 101-2 - the main function doesn't know what the count variable is
line 110 - you've already declared a global const variable called rows - the compiler does not like you declaring a new local variable with the same name here

Info on arrays
http://www.cplusplus.com/doc/tutorial/arrays/

Working with files
http://www.cplusplus.com/doc/tutorial/files/
kdillon56 (12)
Thank you. So I fixed those issues and I'm looking in to the info you provided. Now it says I don't have any errors but it does not exactly run properly and I'm still not sure why. Any advice?

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#include <iostream>
#include <string>
#include <fstream>
#include <ctime>
#include <cstdlib>
using namespace std;

void begin();
void menu();
void checkSeat();
void printTicket();
void displaySeating();
const int first = 1000;
const int economy = 500; 
const int rows = 9;
const int col = 5;
const int size = 50;
char seat[rows][col];
double price, discount;
string type, sname, name[rows][col];
bool answer;

void begin()
{
    char letters[11] = "ABCDEFGHIJ";
    char letter;
	for ( int row = 0; row < rows; row++ )
    {
        letter = letters[row];
        row < 5;
        row ++;
	}
}

void menu()
{
	cout << "Please choose one of the following:\n ";
    cout << "1. First Class seating\n";
    cout << "2. Economy seating\n";
    cout << "3. Seating allocation\n";
    cout << "4. Ticket holder\n";
}

void checkSeat()
{
	char reply;
	cout << "Enter name:";
    cin >> sname;
    cout << "Do you want a specific seat:(y/n) : ";
    cin >> reply;
    if( reply == 'y' )
	{
		begin();
        cout << "Enter seat: \n";
        cin >> seat[rows][col];
       
		if(seat[rows][col] == 'X')
		{
			seat[rows][col] = 'X';
            name[rows][col] = sname;
        }
        else
        {
			int x = rand()%rows;
            int y = rand()%col;
            while(seat[x][y] == 'X');
                {
					int x = rand()%rows;
                    int y = rand()%col;
                }
				seat[rows][col] = 'X';
                name[rows][col] = sname;
        }
      }
      else
      {
		  begin();
          int rows = rand()%rows;
          int columns = rand()%columns;
          while ( seat[rows][columns] == 'X')
          {
			  rows = rand()%rows;
              columns = rand()%columns;
          }
		  seat[rows][columns] = 'X';
          name[rows][columns] = sname;
      }
}

void printTicket()
{
	cout <<"Name: " << name << endl;
    cout << "Seat No: " << seat << endl;
    cout << "Ticket type: " << type << endl;
    cout << "price: " << price << endl;
}
       
void displaySeating()
        {
        }

int main()
{
	int choice, count;
    srand(time(NULL));
    count < 50;
    count ++;
	{
		menu();
        cin >> choice;
        switch (choice)
		{
			case 1:  type = "First class";
			begin();
			{
				checkSeat();
                bool isleSeat1 = seat[rows][1];
                bool isleSeat2 = seat[rows][2];
                if ( isleSeat1 == true || isleSeat2 == true )
				{
					discount = 10 / 100 * first;
                    price = first - discount;
				}
				else
				{
					price = first;
                }
             }
				break;
                case 2:  type = "Economy";
                begin();
				while( rows > 2 )
				{
					checkSeat();
                    bool isleSeat1 = seat[rows][1];
                    bool isleSeat2 = seat[rows][2];
					if ( isleSeat1 == true || isleSeat2 == true )
					{
						discount = 10 / 100 * first;
                        price = first - discount;
					}
					else
					{
						price = first;
                    }
                 }
					break;
                    case 3:  
				    printTicket();
                    break;
                    case 4: default: cout << "Incorrect. Choose between 1-4 \n";
          }
       }
            return 0;
}
AbstractionAnon (6954)
line 30: As pointed out previously, this line doesn't do anything. What do you think this line does?

Line 106: ditto

Line 117-118: You're assigning a char to a bool. What are you trying to do here?

Line 135-136: Ditto.

Line 78-79: You're referencing the local uninitialized variable here, not the global const at line 15-16.

Line 107: You're incrementing an uninitialized variable.



wildblue (1505)
I'd try walking through the code on paper or through a debugger and following how values of variables are getting assigned.

Entering the name - if you're expecting them to enter a first and last name, you'll want to look into using getline because the cin will stop at the blank space between first and last names.

Entering seat - it's not clear what is supposed to be entered there. Is a seat map supposed to be displaying so I know what seat I can choose?

It looks like the content of the seat array will have values like 'X', but then you try to assign that to a bool variable?
while(seat[x][y] == 'X');
bool isleSeat1 = seat[rows][1];

What is the begin function supposed to do? I threw in some cout statements to illustrate what's happening there. The letter variable doesn't get used anywhere else so I'm not sure what you mean to do here. 


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void begin()
{
    char letters[11] = "ABCDEFGHIJ";
    char letter;
	for ( int row = 0; row < rows; row++ )
    {
        cout << "row is now " << row << endl;
        letter = letters[row];
        cout << "letter is now " << letter << endl;
        row < 5;
        row ++;
        cout << "row is now " << row << endl;
	}

row is now 0
letter is now A
row is now 1
row is now 2
letter is now C
row is now 3
row is now 4
letter is now E
row is now 5
row is now 6
letter is now G
row is now 7
row is now 8
letter is now I
row is now 9


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