X și O

#include <iostream>
using namespace std;

int check(int n, int* a[])
{
    //verificare orizontala
    for (int i = 0; i < n; i++)
    {
        bool flag = true;
        for (int j = 0; j < n; j++)
            if (a[i][j] != a[i][0])
            {
                flag = false;
                break;
            }

        if (flag && a[i][0] != 0)
            return a[i][0];
    }

    //verificare verticala
    for (int i = 0; i < n; i++)
    {
        bool flag = true;
        for (int j = 0; j < n; j++)
            if (a[j][i] != a[0][i])
            {
                flag = false;
                break;
            }

        if (flag && a[0][i] != 0)
            return a[0][i];
    }


    //verificare diagonala principala
    bool flag = true;
    for (int i = 0; i < n; i++)
        if (a[i][i] != a[0][0])
        {
            flag = false;
            break;
        }

    if (flag && a[0][0] != 0)
        return a[0][0];

    //verificare diagonala secundara
    flag = true;
    for (int i = 0; i < n; i++)
        if (a[i][n - i - 1] != a[0][n - 1])
        {
            flag = false;
            break;
        }

    if (flag && a[0][n - 1] != 0)
        return a[0][n - 1];

    int c = 0;
    for (int i = 0; i < n; i++)
        for (int j = 0; j < n; j++)
            if (a[i][j] == 0)
                c++;
    if (c == 0)
        return -1;
    return 0;
}

int main()
{
    system("CLS");
    setlocale(LC_ALL, "Romanian");

    int n = 3;
    int** game_field = new int* [n];
    for (int i = 0; i < n; i++)
        game_field[i] = new int[n];
    for (int i = 0; i < n; i++)
        for (int j = 0; j < n; j++)
            game_field[i][j] = 0;

    int next_turn = 1;
    while (true)
    {
        for (int i = 0; i < n; i++)
        {
            for (int j = 0; j < n; j++)
                switch (game_field[i][j])
                {
                case 0:
                    cout << ". ";
                    break;
                case 1:
                    cout << "X ";
                    break;
                case 2:
                    cout << "O ";
                    break;
                }
            cout << endl;
        }

        if (check(n, game_field) == -1)
        {
            cout << endl << "Niciun castigator. " << endl;
            break;
        }

        if (check(n, game_field) != 0)
        {
            cout << endl << "Jucatorul " << check(n, game_field) << " a castigat" << endl;
            break;
        }

        int x, y;
        cout << endl;
        cout << "Introduceti coordonatele verticale si orizontale ";
        cout << "(" << ((next_turn == 1) ? "Jucatorul 1 pune X" : "Jucatorul 2 pune O") << "): ";
        cin >> y >> x;
        if (0 <= x && x < n && 0 <= y && y < n)
            if (game_field[y][x] == 0)
            {
                game_field[y][x] = next_turn;
                next_turn = (next_turn == 1) ? 2 : 1;
            }
        system("CLS");
    }

    return 0;
}