用C语言写一个贪吃蛇

编写一个完整的贪吃蛇游戏需要大量的代码，涉及到窗口绘制、键盘输入处理、游戏状态管理等多个部分。这里我将给出一个简化的C语言版本，使用文本模式来展示基本的游戏框架，实际的游戏会更复杂，并可能需要结合图形库如ncurses来完成。

#include <stdio.h>
#include <conio.h> // Windows系统下的键盘输入函数

#define BOARD_SIZE 10
#define SNAKE_LENGTH 5
#define UP 72
#define DOWN 80
#define LEFT 75
#define RIGHT 77

struct Snake {
    int x[BOARD_SIZE * BOARD_SIZE], y[BOARD_SIZE * BOARD_SIZE];
    int length;
};

void moveSnake(struct Snake* snake) {
    if (snake->length > 1 && snake->x[snake->length - 1] == snake->x[snake->length - 2] &&
        snake->y[snake->length - 1] == snake->y[snake->length - 2]) {
        for (int i = snake->length - 1; i > 0; i--) {
            snake->x[i] = snake->x[i - 1];
            snake->y[i] = snake->y[i - 1];
        }
    } else {
        snake->x[snake->length] = snake->x[snake->length - 1] + 1;
        snake->y[snake->length] = snake->y[snake->length - 1];
    }
}

int main() {
    struct Snake snake = { {0}, {0} };
    snake.length = 1;

    while (TRUE) {
        printf("\nSnakelord's World\n");
        for (int i = 0; i < BOARD_SIZE; i++) {
            for (int j = 0; j < BOARD_SIZE; j++) {
                if (i == snake.y[0] && j == snake.x[0])
                    printf("O");
                else
                    printf(" ");
            }
            printf("\n");
        }

        // Move the snake based on user input
        switch (_getch()) {
            case UP: snake.y[0]--;
                break;
            case DOWN: snake.y[0]++;
                break;
            case LEFT: snake.x[0]--;
                break;
            case RIGHT: snake.x[0]++;
                break;
        }
        moveSnake(&snake);

        // Check for game over conditions (e.g., hitting a wall or eating its own tail)
        if (snake.x[snake.length] < 0 || snake.x[snake.length] >= BOARD_SIZE ||
            snake.y[snake.length] < 0 || snake.y[snake.length] >= BOARD_SIZE ||
            // ... more checks here ...
            ) {
            printf("Game Over!\n");
            return 0;
        }

        // Add new block to the snake head when it eats food (for this basic example, we don't add anything)
    }
}

这只是一个非常基础的框架，真正的游戏还需要处理用户输入判断是否吃到食物，增加食物生成，以及更复杂的边界检查等。如果你想要一个完整的游戏体验，建议使用专门的编程环境和库，比如Unity或pygame。