C++ Int Input for If statement is not validating correctly

Hopefully, someone out there can help me. I'm definitely a newbie when it comes to programming and C++. I'm attempting to do a validation for the user's input for rowChosen (0 to 14) and colChosen (o to 19). When I input a value of 15 for rowChosen, it let me pass. Same for colChosen. When I enter 20, it allowed me to pass. I tried setting my int rowChosen = -1 in the header, but it then just default to the first condition which is, ""Please enter a row number between 0 and 14" but it always allows me to pass. What am I doing wrong?

            #include <iostream>
            #include <iomanip>
            #include <string>
            #include <cmath>
            using namespace std;

            int main()
            {

                char selection;
                int rowChosen = 0;
                int colChosen = 0;
                int seatNum = 0;
                float totalCost = 0;


                //theater menu
                do {
                    cout << "MOVIE THEATER MENU" << endl;
                    cout << "------------------" << endl;
                    cout << "1) Sell a ticket" << endl;
                    cout << "Q) Quit program" << endl;
                    cout << "Please make a selection" << endl;
                    cin >> selection;

                    if (selection == '1')
                    {
                        cout << "Please enter a row number and seat number for the ticket:\n";
                        cout << "Row # : ";

                        if (rowChosen < 0 || rowChosen > 14)
                        {
                            cout << "Please enter a row number between 0 and 14\n";
                         }

                        else
                        {
                            cin >> rowChosen;
                            cin.ignore(15, '\n');
                        }

                        cout << "Seat # : ";

                        if (colChosen < 0 || colChosen >19)
                        {
                            cout << "Please enter a column number between 0 and 19\n";
                        }
                        else 
                        {
                            cin >> colChosen;
                            seatNum++; // count the seat that have been sold
                        }
                        cout << endl;

                        //if seat is already taken              
                        if (map[rowChosen][colChosen] == '#')
                        {
                            cout << "Sorry. The ticket is not available for this seat.\n";
                            continue; // start the loop again
                        }
                        else  // selling the ticket
                            map[rowChosen][colChosen] = '#';
                        totalCost += rowCost[rowChosen];
                    }

                    else if (selection == 'q' || selection == 'Q')
                    {
                        cout << "UPDATED SEATING CHART AND SALES INFO \n";
                        cout << "------------------------------------\n";
                        theaterSeats(map);
                        cout << "TOTAL TICKETS SOLD: " << seatNum << endl;
                        cout << fixed << setprecision(2) << "TOTAL REVENUE: $" << totalCost <<  endl;
                    }

                    else if (selection != 'Q' && selection != 'q')
                    {
                        cout << "Invalid selection. Please try again" << endl;
                    }


                } while (selection != 'Q' && selection != 'q');

                cout << endl;
                cout << "You have chosen to quit the program. Thank you for using!" << endl;

                system("PAUSE");
                return 0;
            }