闲暇之余自己写的一个C++三子棋小游戏，分享给大家！

#include <iostream>
#define Chess char *

using namespace std;

void DrawBoard(Chess chess)
{ 
    cout << "-------------" << endl;
    cout << "| " << chess[0] << " | " << chess[1] << " | " << chess[2] << " |" << endl;
    cout << "|-----------|" << endl;
    cout << "| " << chess[3] << " | " << chess[4] << " | " << chess[5] << " |" << endl;
    cout << "|-----------|" << endl;
    cout << "| " << chess[6] << " | " << chess[7] << " | " << chess[8] << " |" << endl;
    cout << "-------------" << endl;
}

bool IsWin(Chess chess, char letter)
{ 
    return (chess[0] == letter && chess[1] == letter && chess[2] == letter) ||
           (chess[3] == letter && chess[4] == letter && chess[5] == letter) ||
           (chess[6] == letter && chess[7] == letter && chess[8] == letter) ||
           (chess[6] == letter && chess[3] == letter && chess[0] == letter) ||
           (chess[7] == letter && chess[4] == letter && chess[1] == letter) ||
           (chess[8] == letter && chess[5] == letter && chess[2] == letter) ||
           (chess[6] == letter && chess[4] == letter && chess[2] == letter) ||
           (chess[8] == letter && chess[4] == letter && chess[0] == letter);
}

bool IsFull(Chess chess, int index)
{ 
    return chess[index] != ' ';
}

bool IsFullAll(Chess chess)
{ 
    return (IsFull(chess, 0) && IsFull(chess, 1) && IsFull(chess, 2) &&
            IsFull(chess, 3) && IsFull(chess, 4) && IsFull(chess, 5) &&
            IsFull(chess, 6) && IsFull(chess, 7) && IsFull(chess, 8));
}

int AI(Chess chess)
{ 
    for (int i = 0; i <= 8; i++)
    { 
        if (!IsFull(chess, i))
        { 
            chess[i] = 'O';
            if (IsWin(chess, 'O'))
                return i;
            chess[i] = 'X';
            if (IsWin(chess, 'X'))
                return i;
            chess[i] = ' ';
        }
    }
    for (int i = 0; i <= 8; i++)
    { 
        if (!IsFull(chess, i))
        { 
            return i;
        }
    }
    return -1;
}

int PlayerInput(Chess chess)
{ 
    int input;
    do
    { 
        cout << "please input a number" << endl;
        cin >> input;
    } while (IsFull(chess, input - 1) && !input <= 9 && !input >= 1);
    return input;
}

int main(void)
{ 
    char chessBoard[] = { ' ', ' ', ' ',
                         ' ', ' ', ' ',
                         ' ', ' ', ' '};

    char chessInputBoard[] = { '1', '2', '3',
                              '4', '5', '6',
                              '7', '8', '9'};

    int input;

    cout << "Game begin" << endl;
    cout << "You go first" << endl;
    for (;;)
    { 
        DrawBoard(chessInputBoard);
        int in = PlayerInput(chessBoard);
        chessBoard[in - 1] = 'X';
        chessInputBoard[in - 1] = 'X';
        DrawBoard(chessBoard);
        if (IsFullAll(chessBoard))
        { 
            cout << "The game is full" << endl;
            break;
        }
        if (IsWin(chessBoard, 'X'))
        { 
            cout << "You win!" << endl;
            break;
        }

        cout << "The computer go" << endl;
        int ai = AI(chessBoard);
        chessBoard[ai] = 'O';
        chessInputBoard[ai] = 'O';
        DrawBoard(chessBoard);
        if (IsFullAll(chessBoard))
        { 
            cout << "The game is full" << endl;
            break;
        }
        if (IsWin(chessBoard, 'O'))
        { 
            cout << "Computer win!" << endl;
            break;
        }
        cout << "It's your turn" << endl;
    }
    cout<<"The game is over"<<endl;
    cout<<"Thank you for your play"<<endl;
    return 0;
}