帮我用c语言写一个贪吃蛇游戏代码

好的，我可以回答这个问题。以下是一个简单的贪吃蛇游戏的 C 语言代码：

#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <windows.h>

#define WIDTH 20
#define HEIGHT 20
#define FOOD '$'
#define SNAKE_HEAD '@'
#define SNAKE_BODY '*'

int score = ;
int speed = 100;

struct Snake {
    int x;
    int y;
    struct Snake *next;
};

struct Snake *head = NULL;
struct Snake *tail = NULL;

char map[HEIGHT][WIDTH];

void init_map() {
    int i, j;
    for (i = ; i < HEIGHT; i++) {
        for (j = ; j < WIDTH; j++) {
            if (i ==  || i == HEIGHT - 1 || j ==  || j == WIDTH - 1) {
                map[i][j] = '#';
            } else {
                map[i][j] = ' ';
            }
        }
    }
}

void draw_map() {
    int i, j;
    system("cls");
    for (i = ; i < HEIGHT; i++) {
        for (j = ; j < WIDTH; j++) {
            printf("%c", map[i][j]);
        }
        printf("\n");
    }
    printf("Score: %d\n", score);
}

void add_snake(int x, int y) {
    struct Snake *node = (struct Snake *)malloc(sizeof(struct Snake));
    node->x = x;
    node->y = y;
    node->next = NULL;
    if (head == NULL) {
        head = node;
        tail = node;
    } else {
        tail->next = node;
        tail = node;
    }
}

void init_snake() {
    add_snake(WIDTH / 2, HEIGHT / 2);
    add_snake(WIDTH / 2 + 1, HEIGHT / 2);
    add_snake(WIDTH / 2 + 2, HEIGHT / 2);
}

void draw_snake() {
    struct Snake *p = head;
    while (p != NULL) {
        map[p->y][p->x] = (p == head) ? SNAKE_HEAD : SNAKE_BODY;
        p = p->next;
    }
}

void move_snake(int dx, int dy) {
    int x = head->x + dx;
    int y = head->y + dy;
    if (map[y][x] == '#' || map[y][x] == SNAKE_BODY) {
        printf("Game Over!\n");
        exit();
    }
    if (map[y][x] == FOOD) {
        add_snake(x, y);
        score += 10;
        if (speed > 50) {
            speed -= 10;
        }
        generate_food();
    } else {
        map[tail->y][tail->x] = ' ';
        tail->x = x;
        tail->y = y;
        head = tail;
        tail = tail->next;
    }
}

void generate_food() {
    int x, y;
    do {
        x = rand() % (WIDTH - 2) + 1;
        y = rand() % (HEIGHT - 2) + 1;
    } while (map[y][x] != ' ');
    map[y][x] = FOOD;
}

void play_game() {
    int dx = 1, dy = ;
    while (1) {
        if (_kbhit()) {
            char ch = _getch();
            if (ch == 'a' && dx != 1) {
                dx = -1;
                dy = ;
            } else if (ch == 'd' && dx != -1) {
                dx = 1;
                dy = ;
            } else if (ch == 'w' && dy != 1) {
                dx = ;
                dy = -1;
            } else if (ch == 's' && dy != -1) {
                dx = ;
                dy = 1;
            }
        }
        move_snake(dx, dy);
        draw_map();
        draw_snake();
        Sleep(speed);
    }
}

int main() {
    init_map();
    init_snake();
    generate_food();
    draw_map();
    draw_snake();
    play_game();
    return ;
}