用C++写五子棋人机对决

写五子棋人机对决的C++代码需要一定的算法和逻辑。下面是一个简单的示例代码，展示了如何实现一个简单的五子棋人机对战：

#include <iostream>
#include <vector>
using namespace std;

const int SIZE = 15;
const int WIN_COUNT = 5;
const char EMPTY = '.';
const char PLAYER = 'X';
const char AI = 'O';

// 棋盘
vector<vector<char>> board(SIZE, vector<char>(SIZE, EMPTY));

// 判断是否胜利
bool isWin(int row, int col, char player) {
    // 判断横向
    int count = 0;
    for (int i = col - WIN_COUNT + 1; i <= col; i++) {
        if (i < 0 || i >= SIZE) continue;
        if (board[row][i] == player) {
            count++;
            if (count == WIN_COUNT) return true;
        } else {
            count = 0;
        }
    }

    // 判断纵向
    count = 0;
    for (int i = row - WIN_COUNT + 1; i <= row; i++) {
        if (i < 0 || i >= SIZE) continue;
        if (board[i][col] == player) {
            count++;
            if (count == WIN_COUNT) return true;
        } else {
            count = 0;
        }
    }

    // 判断左斜向
    count = 0;
    for (int i = -WIN_COUNT + 1; i <= 0; i++) {
        int r = row + i;
        int c = col + i;
        if (r < 0 || r >= SIZE || c < 0 || c >= SIZE) continue;
        if (board[r][c] == player) {
            count++;
            if (count == WIN_COUNT) return true;
        } else {
            count = 0;
        }
    }

    // 判断右斜向
    count = 0;
    for (int i = -WIN_COUNT + 1; i <= 0; i++) {
        int r = row + i;
        int c = col - i;
        if (r < 0 || r >= SIZE || c < 0 || c >= SIZE) continue;
        if (board[r][c] == player) {
            count++;
            if (count == WIN_COUNT) return true;
        } else {
            count = 0;
        }
    }

    return false;
}

// AI下棋
void aiMove() {
    int maxScore = 0;
    int bestRow = 0, bestCol = 0;

    // 遍历每个空位
    for (int row = 0; row < SIZE; row++) {
        for (int col = 0; col < SIZE; col++) {
            if (board[row][col] == EMPTY) {
                int score = 0;

                // 计算当前位置的得分
                // 这里可以根据需要编写具体的评估函数

                if (score > maxScore) {
                    maxScore = score;
                    bestRow = row;
                    bestCol = col;
                }
            }
        }
    }

    // 在得分最高的位置下棋
    board[bestRow][bestCol] = AI;
}

// 打印棋盘
void printBoard() {
    for (int row = 0; row < SIZE; row++) {
        for (int col = 0; col < SIZE; col++) {
            cout << board[row][col] << " ";
        }
        cout << endl;
    }
}

int main() {
    int row, col;

    while (true) {
        cout << "请输入行号和列号（以空格分隔）：";
        cin >> row >> col;

        // 判断输入是否合法
        if (row < 0 || row >= SIZE || col < 0 || col >= SIZE || board[row][col] != EMPTY) {
            cout << "输入无效，请重新输入！" << endl;
            continue;
        }

        // 玩家下棋
        board[row][col] = PLAYER;
        printBoard();

        // 判断是否胜利
        if (isWin(row, col, PLAYER)) {
            cout << "恭喜你，你赢了！" << endl;
            break;
        }

        // AI下棋
        aiMove();
        printBoard();

        // 判断是否胜利
        if (isWin(row, col, AI)) {
            cout << "很遗憾，你输了！" << endl;
            break;
        }
    }

    return 0;
}

这只是一个简单的示例，AI的下棋策略可以根据实际需求进行优化和改进。