c++ tic-tac-toe

#include <iostream>

using namespace std;

int main()
{
    //making the opening text appear
    cout << "Welcome to Tic-Tac-Toe!" << endl;

//Making the array
char my_array[3][3]
{
	{ '.', '.', '.' },
	{ '.', '.', '.' },
	{ '.', '.', '.' },
};
    //int check;
bool winner = false; //Set this to true when somebody wins
string player_one = "Player X's turn! Please press 1-9 to place a piece and press Enter.";
string player_two = "Player O's turn! Please press 1-9 to place a piece and press Enter.";
int turn = 1;
char symbol = 'X';
int points = 0;
char play_again = 'n';
int keyPressed; //variable used in the game function
cout << player_one << endl; //Begins the game with player one

     cout << "The board treats number inputs like this:\n";
     //Making the demonstration array
char demo_array[3][3]
{
	{ '1', '2', '3' },
	{ '4', '5', '6' },
	{ '7', '8', '9' },
};
//Making the demonstration array show up
for (int i = 0; i < 3; i++)
{
	for (int j = 0; j < 3; j++)
	{
		cout << demo_array[i][j];
	}
	cout << endl;
}

cout << "GAMEBOARD \n";
for (int i = 0; i < 3; i++)
{
	for (int j = 0; j < 3; j++)
	{
		cout << my_array[i][j];
	}
	cout << endl;
}

while(!winner)
{
cin >> keyPressed;

if (turn == 1)
{
    symbol = 'X';
    cout << player_one;
    cout << endl;
}
else
{
    symbol = 'O';
    cout << player_two;
    cout << endl;
}

if (keyPressed <= 3 && my_array[0][keyPressed-1] == '.')
{
    my_array[0][keyPressed-1] = symbol;
    turn = -turn;
}
if (keyPressed > 3 && keyPressed <= 6 && my_array[1][keyPressed-4] == '.')
{
    my_array[1][keyPressed-4] = symbol;
    turn = -turn;
}
if (keyPressed > 6 && keyPressed <= 9 && my_array[2][keyPressed-7] == '.')
{
    my_array[2][keyPressed-7] = symbol;
    turn = -turn;
}

for (int i = 0; i < 3; i++)
{
	for (int j = 0; j < 3; j++)
	{
		if (my_array[i][j] == symbol)
		    points++;
		if (points > 2)
		{
		    winner = 1;
		    break;
		}
	}
	points = 0;
}

for (int j = 0; j < 3; j++)
{
	for (int i = 0; i < 3; i++)
	{
		if (my_array[i][j] == symbol)
		    points++;
		if (points > 2)
		{
		    winner = 1;
		    break;
		}
	}
	points = 0;
}

for (int i = 0; i < 3; i++)
{
	for (int j = 0; j < 3; j++)
	{
		cout << my_array[i][j];
	}
	cout << endl;
}

if (my_array[0][0] == symbol && my_array[1][1] == symbol && my_array[2][2] == symbol
    or my_array[2][0] == symbol && my_array[1][1] == symbol && my_array[0][2] == symbol)
        winner = 1;
}

cout << "player " << symbol << " wins\npress 'y' and enter to play again: ";
cin >> play_again;

if (play_again == 'y')
    main();
else
    cout << "thanks for playing";
}