五子棋人人对战C++代码实现

以下是一个简单的五子棋人人对战的 C++ 代码实现，仅供参考：

#include <iostream>
using namespace std;

const int ROWS = 15;
const int COLS = 15;
char board[ROWS][COLS]; // 棋盘

void init_board() {
    for (int i = 0; i < ROWS; i++) {
        for (int j = 0; j < COLS; j++) {
            board[i][j] = '+';
        }
    }
}

void print_board() {
    cout << "  ";
    for (int i = 0; i < COLS; i++) {
        cout << i+1 << " ";
    }
    cout << endl;
    for (int i = 0; i < ROWS; i++) {
        cout << i+1 << " ";
        for (int j = 0; j < COLS; j++) {
            cout << board[i][j] << " ";
        }
        cout << endl;
    }
}

bool is_valid_move(int row, int col) {
    if (row < 0 || row >= ROWS || col < 0 || col >= COLS) {
        return false;
    }
    if (board[row][col] != '+') {
        return false;
    }
    return true;
}

bool is_win(int row, int col) {
    char player = board[row][col];
    int count = 0;
    // 横向
    for (int i = col-4; i <= col+4; i++) {
        if (i < 0 || i >= COLS) {
            continue;
        }
        if (board[row][i] == player) {
            count++;
            if (count == 5) {
                return true;
            }
        } else {
            count = 0;
        }
    }
    // 竖向
    count = 0;
    for (int i = row-4; i <= row+4; i++) {
        if (i < 0 || i >= ROWS) {
            continue;
        }
        if (board[i][col] == player) {
            count++;
            if (count == 5) {
                return true;
            }
        } else {
            count = 0;
        }
    }
    // 斜向1
    count = 0;
    for (int i = -4; i <= 4; i++) {
        int r = row + i;
        int c = col + i;
        if (r < 0 || r >= ROWS || c < 0 || c >= COLS) {
            continue;
        }
        if (board[r][c] == player) {
            count++;
            if (count == 5) {
                return true;
            }
        } else {
            count = 0;
        }
    }
    // 斜向2
    count = 0;
    for (int i = -4; i <= 4; i++) {
        int r = row + i;
        int c = col - i;
        if (r < 0 || r >= ROWS || c < 0 || c >= COLS) {
            continue;
        }
        if (board[r][c] == player) {
            count++;
            if (count == 5) {
                return true;
            }
        } else {
            count = 0;
        }
    }
    return false;
}

int main() {
    init_board();
    print_board();

    int row, col;
    char player = 'O';
    while (true) {
        cout << "Player " << player << ", enter row and column: ";
        cin >> row >> col;
        row--; // 从0开始计数
        col--;
        if (!is_valid_move(row, col)) {
            cout << "Invalid move, try again." << endl;
            continue;
        }
        board[row][col] = player;
        print_board();
        if (is_win(row, col)) {
            cout << "Player " << player << " wins!" << endl;
            break;
        }
        // 切换玩家
        if (player == 'O') {
            player = 'X';
        } else {
            player = 'O';
        }
    }

    return 0;
}

这个代码实现了以下功能：

- 初始化棋盘
- 打印棋盘
- 判断落子是否合法
- 判断是否获胜
- 交替落子

你可以根据自己的需要进行修改和扩展。