C++ 2d Char 数组比较不正确

Question

我正在创建一个连接四，试图实现放置功能，添加到特定列中的最低行。这是董事会的初始化

Board::Board()
{
    for(int i=0;i<8;i++)
        for(int j=0;j<8;j++)
            place[i][j] = EMP;  // EMP is a const char = '-'

    cout << "Initalized.\n";
}

出于某种原因，这段代码一直运行到 i = 1，然后将 place[1][col] 设置为 *但是当我去显示它时，它在数组底部显示 *，所以放置 [7][col]。

此外，this->place and place in the cout at the beginning never give me the output of '-' which it should be.

int Board::add(int player, int col)
{
    char piece;
    col--;  // Dealing with array starting at 0, not 1
    (player==1) ? piece = P1: piece = P2;   // Character defining players piece
    int i;

    for (i = 7; i >= 0; i--)
    {

        cout << "this - " << this->place[i][col] << endl;
        cout << "place - " << place[i][col] << endl;
        if(place[i][col] == EMP)
        {
            cout << "Empty looks like " << place[i][col] << "\ti: " << i << endl;
            place[i][col] = piece;
            system("pause");
            return i;
        }else
        {
            cout << "not EMP - " << place[i][col] << endl;
            system("pause");
        }
    }

    return 0;
}

Answer 1

你将一个 char 传递给你的 int 函数，它将数字转换为一个 char 变量(给你垃圾)。我稍微重写了函数，一切似乎都正常。

int Board::add(int player, char col)
{
    char piece;
    int Num;
    Num = atoi(&col);
    cout << Num << endl << endl;
    Num--;  // Dealing with array starting at 0, not 1
    (player==1) ? piece = P1: piece = P2;   // Character defining players piece
    int i;

    for (i = 7; i >= 0; i--)
    {

        cout << "this - " << this->place[i][Num] << endl;
        cout << "place - " << place[i][Num] << endl;
        if(place[i][Num] == EMP)
        {
            cout << "Empty looks like " << place[i][Num] << "\ti: " << i << endl;
            place[i][Num] = piece;
            return i;
        }else
        {
            cout << "not EMP - " << place[i][Num] << endl;
        }
        system("pause");
    }

    return 0;
}

希望这对您有所帮助。