写一个c++的五子棋代码

以下是一个基本的C++五子棋代码：

#include <iostream>
using namespace std;

const int ROW = 15;
const int COL = 15;

char board[ROW][COL]; // 棋盘

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

void drawBoard() // 画出棋盘
{
    cout << "  ";
    for (int i = 0; i < COL; i++) {
        cout << i << " ";
    }
    cout << endl;

    for (int i = 0; i < ROW; i++) {
        cout << i << " ";
        for (int j = 0; j < COL; j++) {
            cout << board[i][j] << " ";
        }
        cout << endl;
    }
}

bool isWin(char player) // 判断是否胜利
{
    // 判断行
    for (int i = 0; i < ROW; i++) {
        for (int j = 0; j < COL - 4; j++) {
            if (board[i][j] == player && board[i][j+1] == player && board[i][j+2] == player && board[i][j+3] == player && board[i][j+4] == player) {
                return true;
            }
        }
    }

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

    // 判断右斜线
    for (int i = 0; i < ROW - 4; i++) {
        for (int j = 0; j < COL - 4; j++) {
            if (board[i][j] == player && board[i+1][j+1] == player && board[i+2][j+2] == player && board[i+3][j+3] == player && board[i+4][j+4] == player) {
                return true;
            }
        }
    }

    // 判断左斜线
    for (int i = 4; i < ROW; i++) {
        for (int j = 0; j < COL - 4; j++) {
            if (board[i][j] == player && board[i-1][j+1] == player && board[i-2][j+2] == player && board[i-3][j+3] == player && board[i-4][j+4] == player) {
                return true;
            }
        }
    }

    return false;
}

int main()
{
    initBoard();
    drawBoard();

    char player = 'X'; // 先手为X
    int row, col;

    while (true) {
        cout << "请输入下棋的位置，用空格分隔，例如：3 4" << endl;
        cin >> row >> col;

        if (row >= 0 && row < ROW && col >= 0 && col < COL && board[row][col] == '+') {
            board[row][col] = player;
            drawBoard();

            if (isWin(player)) {
                cout << "恭喜" << player << "获胜！" << endl;
                break;
            }

            player = (player == 'X') ? 'O' : 'X'; // 交换先手
        } else {
            cout << "输入无效，请重新输入！" << endl;
        }
    }

    return 0;
}

这个代码实现了五子棋的基本功能，包括初始化棋盘、画出棋盘、下棋、判断胜利等等。当然，这只是一个基本的实现，还有很多可以改进的地方，比如加入人机对战、增加界面等等。