我如何重置我的井字游戏的值

您好，我的程序有问题。编程对我来说是新的，我不知道我将在哪里重置矩阵的值，因为它的值的声明是全局的。为了了解更多信息，我在下面有一个评论，其中如果游戏已经完成，程序将询问用户是否要再次运行游戏。无论如何，可以通过向给定代码添加一些代码或修改来解决此问题。我尝试使用功能转到开始;在 if 条件和主函数中有一个 开始：写入。但它没有用。请提前帮助我谢谢。

#include <iostream>
using namespace std;
char matrix[3][3] = { '1', '2', '3', '4', '5', '6', '7', '8', '9' };
char player = 'X';
int rear; 

void Draw()
{
    system("cls");
    cout << "nntTic Tac Toe Game nn";
    for (int i = 0; i < 3; i++)
    {
        cout<<" t     "; 
        for (int j = 0; j < 3; j++)
        {
            cout << matrix[i][j] << " ";
        }
        cout << endl;
    }
}
void Input()
{
    int a;
    ++rear; 
    cout << "n    Press the number of the field: ";
    cin >> a;
    if (a == 1)
        matrix[0][0] = player;
    else if (a == 2)
        matrix[0][1] = player;
    else if (a == 3)
        matrix[0][2] = player;
    else if (a == 4)
        matrix[1][0] = player;
    else if (a == 5)
        matrix[1][1] = player;
    else if (a == 6)
        matrix[1][2] = player;
    else if (a == 7)
        matrix[2][0] = player;
    else if (a == 8)
        matrix[2][1] = player;
    else if (a == 9)
        matrix[2][2] = player;
    else {
    cout<<"n [ERROR: Invalid Range of Input is only 1-9 ]nn "; 
    system("pause"); 
    rear--; 
    }
}
void TogglePlayer()
{
    if (player == 'X')
        player = 'O';
    else
        player = 'X';
}
char Win()
{
    //first player
    if (matrix[0][0] == 'X' && matrix[0][1] == 'X' && matrix[0][2] == 'X')
        return 'X';
    if (matrix[1][0] == 'X' && matrix[1][1] == 'X' && matrix[1][2] == 'X')
        return 'X';
    if (matrix[2][0] == 'X' && matrix[2][1] == 'X' && matrix[2][2] == 'X')
        return 'X';
    if (matrix[0][0] == 'X' && matrix[1][0] == 'X' && matrix[2][0] == 'X')
        return 'X';
    if (matrix[0][1] == 'X' && matrix[1][1] == 'X' && matrix[2][1] == 'X')
        return 'X';
    if (matrix[0][2] == 'X' && matrix[1][2] == 'X' && matrix[2][2] == 'X')
        return 'X';
    if (matrix[0][0] == 'X' && matrix[1][1] == 'X' && matrix[2][2] == 'X')
        return 'X';
    if (matrix[2][0] == 'X' && matrix[1][1] == 'X' && matrix[0][2] == 'X')
        return 'X';
    //second player
    if (matrix[0][0] == 'O' && matrix[0][1] == 'O' && matrix[0][2] == 'O')
        return 'O';
    if (matrix[1][0] == 'O' && matrix[1][1] == 'O' && matrix[1][2] == 'O')
        return 'O';
    if (matrix[2][0] == 'O' && matrix[2][1] == 'O' && matrix[2][2] == 'O')
        return 'O';
    if (matrix[0][0] == 'O' && matrix[1][0] == 'O' && matrix[2][0] == 'O')
        return 'O';
    if (matrix[0][1] == 'O' && matrix[1][1] == 'O' && matrix[2][1] == 'O')
        return 'O';
    if (matrix[0][2] == 'O' && matrix[1][2] == 'O' && matrix[2][2] == 'O')
        return 'O';
    if (matrix[0][0] == 'O' && matrix[1][1] == 'O' && matrix[2][2] == 'O')
        return 'O';
    if (matrix[2][0] == 'O' && matrix[1][1] == 'O' && matrix[0][2] == 'O')
        return 'O';
    return '/';
}
int main()
{
    char choice; 
    Draw();
    Start: 
    while (1)
    {
        Input();
        Draw();
        if (Win() == 'X')
        {
            cout << "n    [Message: Player 'X' Wins The Game]  ";
            break;
        }
        else if (Win() == 'O')
        {
            cout << "n    [Message: Player 'O' Wins The Game ]" << endl;
            break;
        }
        else if(rear==9)
        {
            cout<<" Draw"<<endl; 
            break; 
        }
        TogglePlayer();
    }
    cout<<"nn   ";
    cout<<"Do you want to run the game again [Y/N]? ";
    cin>>choice;
    if(choice=='Y' || choice=='y')
    {
        // i don't know where i can reset the values again; 
    }
    else 
    {
    }
    return 0;
}