用c语言写一个五子棋程序

好的，下面是一个简单的五子棋程序的C语言代码：

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

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

int board[BOARD_SIZE][BOARD_SIZE];

void init_board() {
    for (int i = 0; i < BOARD_SIZE; i++) {
        for (int j = 0; j < BOARD_SIZE; j++) {
            board[i][j] = EMPTY;
        }
    }
}

void print_board() {
    printf("  ");
    for (int i = 0; i < BOARD_SIZE; i++) {
        printf("%d ", i);
    }
    printf("\n");

    for (int i = 0; i < BOARD_SIZE; i++) {
        printf("%d ", i);
        for (int j = 0; j < BOARD_SIZE; j++) {
            if (board[i][j] == EMPTY) {
                printf("+ ");
            } else if (board[i][j] == BLACK) {
                printf("X ");
            } else {
                printf("O ");
            }
        }
        printf("\n");
    }
}

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

bool is_win(int player) {
    int count = 0;

    // 横向
    for (int i = 0; i < BOARD_SIZE; i++) {
        count = 0;
        for (int j = 0; j < BOARD_SIZE; j++) {
            if (board[i][j] == player) {
                count++;
                if (count == 5) {
                    return true;
                }
            } else {
                count = 0;
            }
        }
    }

    // 纵向
    for (int j = 0; j < BOARD_SIZE; j++) {
        count = 0;
        for (int i = 0; i < BOARD_SIZE; i++) {
            if (board[i][j] == player) {
                count++;
                if (count == 5) {
                    return true;
                }
            } else {
                count = 0;
            }
        }
    }

    // 左上到右下
    for (int k = 0; k <= BOARD_SIZE - 5; k++) {
        for (int i = k, j = 0; i < BOARD_SIZE && j < BOARD_SIZE; i++, j++) {
            count = 0;
            for (int x = i, y = j; x < BOARD_SIZE && y < BOARD_SIZE; x++, y++) {
                if (board[x][y] == player) {
                    count++;
                    if (count == 5) {
                        return true;
                    }
                } else {
                    count = 0;
                }
            }
        }
    }

    // 右上到左下
    for (int k = 4; k < BOARD_SIZE; k++) {
        for (int i = k, j = 0; i >= 0 && j < BOARD_SIZE; i--, j++) {
            count = 0;
            for (int x = i, y = j; x >= 0 && y < BOARD_SIZE; x--, y++) {
                if (board[x][y] == player) {
                    count++;
                    if (count == 5) {
                        return true;
                    }
                } else {
                    count = 0;
                }
            }
        }
    }

    return false;
}

void play_game() {
    int player = BLACK;
    int row, col;
    while (true) {
        printf("Player %d's turn.\n", player);
        printf("Enter row and column: ");
        scanf("%d %d", &row, &col);

        if (is_valid_move(row, col)) {
            board[row][col] = player;
            print_board();
            if (is_win(player)) {
                printf("Player %d wins!\n", player);
                break;
            }
            player = (player == BLACK) ? WHITE : BLACK;
        } else {
            printf("Invalid move. Try again.\n");
        }
    }
}

int main() {
    init_board();
    print_board();
    play_game();
    return 0;
}

这个程序使用二维数组来表示棋盘，0表示空，1表示黑子，2表示白子。程序提供了初始化棋盘，打印棋盘，判断是否为有效落子，判断棋局是否结束，以及进行游戏的主函数。

注意，这个程序只是一个简单的五子棋程序，没有考虑很多特殊情况，比如长连和禁手等规则。如果想要实现更完整的五子棋程序，还需要在这个基础上进行更多的开发和测试。