用c++做个五子棋，人机对战

好的，以下是一个简单的五子棋人机对战的 C++ 代码，供您参考：

#include <iostream>
#include <ctime>
#include <cstdlib>
using namespace std;

const int ROW = 15;
const int COL = 15;
char board[ROW][COL]; // 棋盘
char player = 'X';    // 玩家棋子
char computer = 'O';  // 电脑棋子

// 初始化棋盘
void InitBoard()
{
    for (int i = 0; i < ROW; i++)
    {
        for (int j = 0; j < COL; j++)
        {
            board[i][j] = '+';
        }
    }
}

// 显示棋盘
void DisplayBoard()
{
    cout << " ";
    for (int i = 0; i < COL; i++)
    {
        cout << " " << i + 1;
    }
    cout << endl;
    for (int i = 0; i < ROW; i++)
    {
        cout << i + 1 << " ";
        for (int j = 0; j < COL; j++)
        {
            cout << board[i][j] << " ";
        }
        cout << endl;
    }
}

// 玩家下棋
void PlayerMove()
{
    int x, y;
    cout << "请输入你要下棋的位置（行 列）：";
    cin >> x >> y;
    while (x < 1 || x > ROW || y < 1 || y > COL || board[x - 1][y - 1] != '+')
    {
        cout << "输入有误，请重新输入：";
        cin >> x >> y;
    }
    board[x - 1][y - 1] = player;
}

// 电脑下棋
void ComputerMove()
{
    int x, y;
    srand((unsigned)time(NULL));
    do
    {
        x = rand() % ROW;
        y = rand() % COL;
    } while (board[x][y] != '+');
    board[x][y] = computer;
}

// 判断游戏是否结束
bool IsGameOver()
{
    // 横向判断
    for (int i = 0; i < ROW; i++)
    {
        for (int j = 0; j < COL - 4; j++)
        {
            if (board[i][j] != '+' && board[i][j] == board[i][j + 1] && board[i][j] == board[i][j + 2] && board[i][j] == board[i][j + 3] && board[i][j] == board[i][j + 4])
            {
                return true;
            }
        }
    }

    // 纵向判断
    for (int i = 0; i < ROW - 4; i++)
    {
        for (int j = 0; j < COL; j++)
        {
            if (board[i][j] != '+' && board[i][j] == board[i + 1][j] && board[i][j] == board[i + 2][j] && board[i][j] == board[i + 3][j] && board[i][j] == board[i + 4][j])
            {
                return true;
            }
        }
    }

    // 左上到右下斜向判断
    for (int i = 0; i < ROW - 4; i++)
    {
        for (int j = 0; j < COL - 4; j++)
        {
            if (board[i][j] != '+' && board[i][j] == board[i + 1][j + 1] && board[i][j] == board[i + 2][j + 2] && board[i][j] == board[i + 3][j + 3] && board[i][j] == board[i + 4][j + 4])
            {
                return true;
            }
        }
    }

    // 右上到左下斜向判断
    for (int i = 0; i < ROW - 4; i++)
    {
        for (int j = 4; j < COL; j++)
        {
            if (board[i][j] != '+' && board[i][j] == board[i + 1][j - 1] && board[i][j] == board[i + 2][j - 2] && board[i][j] == board[i + 3][j - 3] && board[i][j] == board[i + 4][j - 4])
            {
                return true;
            }
        }
    }

    // 棋盘已满，平局
    for (int i = 0; i < ROW; i++)
    {
        for (int j = 0; j < COL; j++)
        {
            if (board[i][j] == '+')
            {
                return false;
            }
        }
    }
    return true;
}

int main()
{
    InitBoard(); // 初始化棋盘

    while (!IsGameOver())
    {
        DisplayBoard(); // 显示棋盘
        PlayerMove();   // 玩家下棋
        if (IsGameOver())
        {
            break;
        }
        ComputerMove(); // 电脑下棋
    }

    DisplayBoard(); // 显示最终棋盘

    if (IsGameOver())
    {
        cout << "游戏结束！";
        if (player == board[0][0])
        {
            cout << "玩家胜利！";
        }
        else if (computer == board[0][0])
        {
            cout << "电脑胜利！";
        }
        else
        {
            cout << "平局！";
        }
    }

    return 0;
}

以上是一个简单的五子棋人机对战的 C++ 代码，其中包括棋盘的初始化、显示、玩家和电脑下棋、游戏是否结束的判断等功能。您可以根据需要进行修改和扩展。