2D array Seating Chart C++ [closed] - c++

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I am studying c++ and I need to make a seating chart program. This is not my code as I am studying it to see how each part works. I am interested in the seating chart. I have tried many different things to try and figure this out myself, I have come close, having the Full (*) mark in the right column but it is never in the correct row.
If I choose seat # 1 and Row # 1 it makes the mark on the chart at seat and row #2.
Again, I am not using this code, I just learn better when I test things and see how they all work.
Here is the code
#include "stdafx.h"
#include <iostream>
#include <iomanip>
using namespace std;
int Show_Menu();
void Show_Chart();
const char FULL = '*';
const char EMPTY = '#';
const int rows = 11;
const int columns = 10;
char map[rows][columns];
double price;
int total = 0;
int seat = 90;
int seat2 = 0;
int Quit = 1;
int main()
{
const int Num_Rows = 11;
double price[Num_Rows];
int row2, column2, cost;
int answer;
//I have this blocked out as I am testing the chart only
/* cout << "Please enter price for each row." << endl;
for (int count = 0; count < rows; count++)
{
cout << "Row # " << (count + 1) << ": ";
cin >> price[count];
}
*/
for (int i = 0; i < rows; i++)
{
for (int j = 0; j < columns; j++)
map[i][j] = EMPTY;
}
int choice;
do
{
choice = Show_Menu();
switch (choice)
{
case 1:
cout << "View Seat Prices\n\n";
for (int count = 0; count < rows; count++)
{
cout << "The price for row " << (count + 1) << ": ";
cout << price[count] << endl;
}
break;
case 2:
cout << "Purchase a Ticket\n\n";
do
{
cout << "Please select the row you would like to sit in: ";
cin >> row2;
cout << "Please select the seat you would like to sit in: ";
cin >> column2;
if (map[row2][column2] == FULL)
{
cout << "Sorry that seat is sold-out, Please select a new
seat.";
cout << endl;
}
else
{
cost = price[row2] + 0;
total = total + cost;
cout << "That ticket costs: " << cost << endl;
cout << "Confirm Purchase? Enter (1 = YES / 2 = NO)";
cin >> answer;
if (answer == 1)
{
cout << "Your ticket purchase has been confirmed."
<< endl;
map[row2][column2] = FULL;
}
else if (answer == 2)
{
cout << "Would you like to look at another seat? (1 =
YES / 2 = NO)";
cout << endl;
cin >> Quit;
}
cout << "Would you like to look at another seat?(1 = YES / 2
= NO)";
cin >> Quit;
}
} while (Quit == 1);
break;
case 3:
cout << "View Available Seats\n\n";
Show_Chart();
break;
case 4:
cout << "Total ticket sales: " << total << ".\n\n";
break;
case 5:
cout << "quit\n";
break;
default: cout << "Error input\n";
}
} while (choice != 5);
return 0;
}
int Show_Menu()
{
int MenuChoice;
cout << endl << endl;
cout << " \tMAIN MENU\n";
cout << " 1. View Seat Prices.\n";
cout << " 2. Purchase a Ticket.\n";
cout << " 3. View Available Seats.\n";
cout << " 4. View Ticket Sales.\n";
cout << " 5. Quit the program.\n";
cout << "_____________________\n\n";
cout << "Please enter your choice: ";
cin >> MenuChoice;
cout << endl << endl;
return MenuChoice;
}
void Show_Chart()
{
cout << "Seats 1 2 3 4 5 6 7 8 9 ";
for (int row = 0; row < 10; row++)//rows
{
cout << endl << "Row " << (row + 1);
for (int columns = 0; columns < 9; columns++)
{
cout << " " << map[row][columns];
}
}
cout << endl;
}

Answer 1

If I choose seat # 1 and Row # 1 it makes the mark on the chart at
seat and row #2...
The problem is that arrays in C start with index 0, so the left most seat has index 0, not 1. Thus, if you enter 1 into row2, and write map[row2][column2] = FULL, then actually the second seat is marked.
A simple fix would be to write map[row2-1][column2-1]; but make sure that the user must not enter value 0 then.