将数组传递给功能以显示井字游戏板

Question

我正在尝试为一项家庭作业项目创建一个井字游戏，但是我一直不知道如何传递数组。 目前，我有这个：

原型：

void displayBoard(char);

变量：

const int COLS = 3;
const int ROWS = 3;
char board[ROWS][COLS] = {'*', '*', '*', '*', '*', '*', '*', '*', '*'};

函数调用：

displayBoard(board);

功能：

void displayBoard(char board)
{
    //DISPLAYBOARD displayBoard shows the current tic-tac-toe board
    //along with proper spacing

    cout << "---------------------" << endl << endl;
    cout << "     |     |     " << endl;
    cout << "  " << board[0][0] << "  |  " << board[0][1] << "  |  " << board[0][2] << endl;
    cout << "_____|_____|_____" << endl;
    cout << "     |     |     " << endl;
    cout << "  " << board[1][0] << "  |  " << board[1][1] << "  |  " << board[1][2] << endl;
    cout << "_____|_____|_____" << endl;
    cout << "     |     |     " << endl;
    cout << "  " << board[2][0] << "  |  " << board[2][1] << "  |  " << board[2][2] << endl;
    cout << "     |     |     " << endl;

}

我尝试了将多维数组传递给函数displayBoard的几种变体，但我不断遇到诸如此类的错误：

'void displayBoard（char）'无法将参数1从'char [3] [3]'转换为'char'，如果我将括号（）留空，我还会收到一条错误消息，提示“板未初始化” t，并且我不想使用全局变量。

Answer 1

原型应该是直觉的：

void displayBoard(const char (&board)[ROWS][COLS]);

使用std::array<std::array<char, 3u>, 3u>将具有更直观的语法。

Answer 2

如果需要显示不同大小的板，则可以将模板用于displayBoard方法：

template <int SizeX, int SizeY>
void displayBoard(const char (&board)[SizeX][SizeY])
{
    cout << "---------------------" << endl << endl;
    cout << "     |     |     " << endl;
    cout << "  " << board[0][0] << "  |  " << board[0][1] << "  |  " << board[0][2] << endl;
    cout << "_____|_____|_____" << endl;
    cout << "     |     |     " << endl;
    cout << "  " << board[1][0] << "  |  " << board[1][1] << "  |  " << board[1][2] << endl;
    cout << "_____|_____|_____" << endl;
    cout << "     |     |     " << endl;
    cout << "  " << board[2][0] << "  |  " << board[2][1] << "  |  " << board[2][2] << endl;
    cout << "     |     |     " << endl;

}

但是要小心，并始终检查是否正在访问数组中的现有索引