Something in this function is crashing my program!

Howdy, When my program begins executing the code in case N of the switch statement it crashes. I am not sure why. Anyone care to take a gander?

Code: (I suspect the problem is occurring somewhere in case N of the switch statement)

#include "header.h"

void findSeats(int& FC_Row, int& FC_Col, int& EconRow, int& EconCol, int& ticketNum, int& rowNum, char& ticketType, char& seatType, int airplane[][6])
{
    int aisle,  col;
    char letterCol;

    if (ticketType = 'F')
        {
            switch (seatType)
            {
                case 'W':
                if (airplane[rowNum - 1][0] == 0)
                    {
                    airplane[rowNum - 1][0] = 1;
                    cout << "Your seat is " << (rowNu开发者_开发技巧m) <<  "A" << endl;
                    }
                else if (airplane[rowNum-1][FC_Col - 1] == 0)
                    {
                    airplane[rowNum - 1][FC_Col] = 1;
                    cout << "Your seat is " << (rowNum) <<  "D" << endl;
                    }
                else
                    {
                    cout << "There are no window seats in that row. Please choose a different row." << '\n' << "(use the seating chart to determin where open seats are.)" << '\n' << "Row Number:" <<  endl;
                    cin >> rowNum;
                    while (rowNum > (FC_Row))
                    {
                        cout << "That row is not located in our first class section. choose a row numbered 1-" << (FC_Row) << endl;
                        cin >> rowNum;
                    }
                    findSeats(FC_Row, FC_Col, EconRow, EconCol, ticketNum, rowNum, ticketType, seatType, airplane);
                    }
                    break;

                case 'A':
                aisle = (FC_Col / 2);
                if (airplane[rowNum - 1][aisle - 1] == 0)
                    {
                    airplane[rowNum - 1][aisle - 1] = 1;
                    cout << "Your seat is " << (rowNum) <<  "B" << endl;
                    }
                else if (airplane[rowNum-1][aisle] == 0)
                    {
                    airplane[rowNum - 1][aisle] = 1;
                    cout << "Your seat is " << (rowNum) <<  "C" << endl;
                    }
                else
                    {
                    cout << "There are no aisle seats in that row. Please choose a different row." << '\n' << "(use the seating chart to determin where open seats are.)" << '\n' << "Row Number:" <<  endl;
                    cin >> rowNum;
                    while (rowNum > (FC_Row))
                    {
                        cout << "That row is not located in our first class section. choose a row numbered 1-" << (FC_Row) << endl;
                        cin >> rowNum;
                    }
                    findSeats(FC_Row, FC_Col, EconRow, EconCol, ticketNum, rowNum, ticketType, seatType, airplane);
                    }
                    break;

                case 'N':
                col = 0;
                while (airplane[rowNum - 1][col] == 1)
                    {
                    for (col; airplane[rowNum - 1][col]; col++)
                        {
                        if (col > 3)
                            {
                                cout << "There are no available seats in that row. Please choose a different row." << '\n' << "(use the seating chart to determin where open seats are.)" << '\n' << "Row Number:" <<  endl;
                                cin >> rowNum;
                            }
                            while (rowNum > (FC_Row))
                            {
                                cout << "That row is not located in our first class section. choose a row numbered 1-" << (FC_Row) << endl;
                                cin >> rowNum;
                            }
                            ticketType, seatType, airplane);
                        }
                    }
                    airplane[rowNum - 1][col] = 1;
                    switch (col)
                    {
                        case 0:
                        letterCol = 'A';
                        break;
                        case 1:
                        letterCol = 'B';
                        break;
                        case 2:
                        letterCol = 'C';
                        break;
                        case 3:
                        letterCol = 'D';
                        break;
                    }
                    cout << "Your seat is " << (rowNum) <<  "letterCol" << endl;


            }
        }
}

removing the function call to itself solved the issue.

---

I suspect rownum is 0

Negative indexes are bad.