c语言判断五子棋赢

判断五子棋胜负的方法一般有两种：

1. 检查每个落子点的周围是否有相同颜色的棋子连成五子，如果有，则该颜色获胜。

2. 对于每个落子点，检查其所在的行、列、对角线上是否有相同颜色的棋子连成五子，如果有，则该颜色获胜。

以下是一种基于第二种方法的实现示例：

#include <stdio.h>
#include <stdbool.h>

#define BOARD_SIZE 15
#define EMPTY 0
#define BLACK 1
#define WHITE 2

int board[BOARD_SIZE][BOARD_SIZE];

// 判断某个玩家是否获胜
bool is_win(int player) {
    // 检查每行
    for (int i = 0; i < BOARD_SIZE; i++) {
        for (int j = 0; j <= BOARD_SIZE - 5; j++) {
            bool win = true;
            for (int k = 0; k < 5; k++) {
                if (board[i][j + k] != player) {
                    win = false;
                    break;
                }
            }
            if (win) {
                return true;
            }
        }
    }

    // 检查每列
    for (int i = 0; i < BOARD_SIZE; i++) {
        for (int j = 0; j <= BOARD_SIZE - 5; j++) {
            bool win = true;
            for (int k = 0; k < 5; k++) {
                if (board[j + k][i] != player) {
                    win = false;
                    break;
                }
            }
            if (win) {
                return true;
            }
        }
    }

    // 检查正对角线（左上-右下）
    for (int i = 0; i <= BOARD_SIZE - 5; i++) {
        for (int j = 0; j <= BOARD_SIZE - 5; j++) {
            bool win = true;
            for (int k = 0; k < 5; k++) {
                if (board[i + k][j + k] != player) {
                    win = false;
                    break;
                }
            }
            if (win) {
                return true;
            }
        }
    }

    // 检查反对角线（左下-右上）
    for (int i = 0; i <= BOARD_SIZE - 5; i++) {
        for (int j = BOARD_SIZE - 1; j >= 4; j--) {
            bool win = true;
            for (int k = 0; k < 5; k++) {
                if (board[i + k][j - k] != player) {
                    win = false;
                    break;
                }
            }
            if (win) {
                return true;
            }
        }
    }

    return false;
}

int main() {
    // 初始化棋盘
    for (int i = 0; i < BOARD_SIZE; i++) {
        for (int j = 0; j < BOARD_SIZE; j++) {
            board[i][j] = EMPTY;
        }
    }

    // 玩家1先手，使用黑色棋子
    int current_player = BLACK;

    // 游戏循环
    while (true) {
        // 输出当前棋盘
        printf("Current board:\n");
        for (int i = 0; i < BOARD_SIZE; i++) {
            for (int j = 0; j < BOARD_SIZE; j++) {
                char c;
                switch (board[i][j]) {
                    case EMPTY:
                        c = '.';
                        break;
                    case BLACK:
                        c = 'X';
                        break;
                    case WHITE:
                        c = 'O';
                        break;
                    default:
                        c = '?';
                        break;
                }
                printf("%c ", c);
            }
            printf("\n");
        }

        // 提示当前玩家落子
        char player_name = current_player == BLACK ? 'X' : 'O';
        printf("Player %c's turn, please enter the coordinate (e.g. 3 4): ", player_name);

        // 读入落子坐标
        int x, y;
        scanf("%d %d", &x, &y);

        // 检查落子是否合法
        if (x < 0 || x >= BOARD_SIZE || y < 0 || y >= BOARD_SIZE || board[x][y] != EMPTY) {
            printf("Invalid move, please try again.\n");
            continue;
        }

        // 落子
        board[x][y] = current_player;

        // 检查是否获胜
        if (is_win(current_player)) {
            printf("Player %c wins!\n", player_name);
            break;
        }

        // 切换到下一个玩家
        current_player = current_player == BLACK ? WHITE : BLACK;
    }

    return 0;
}

该程序实现了一个简单的五子棋游戏，每次落子后会检查当前玩家是否获胜，如果获胜则结束游戏。