能用c语言写一个贪吃蛇的代码吗

当然可以，以下是一个简单的贪吃蛇游戏的C语言代码示例：

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

#define HEIGHT 20
#define WIDTH 40

int score = 0;

struct Snake {
    int x;
    int y;
    struct Snake *next;
} *head, *tail;

struct Food {
    int x;
    int y;
} food;

void initMap(char map[HEIGHT][WIDTH]) {
    for (int i = 0; i < HEIGHT; i++) {
        for (int j = 0; j < WIDTH; j++) {
            if (i == 0 || i == HEIGHT - 1 || j == 0 || j == WIDTH - 1) {
                map[i][j] = '#';
            } else {
                map[i][j] = ' ';
            }
        }
    }
}

void printMap(char map[HEIGHT][WIDTH]) {
    system("cls");
    printf("Score: %d\n", score);
    for (int i = 0; i < HEIGHT; i++) {
        for (int j = 0; j < WIDTH; j++) {
            printf("%c", map[i][j]);
        }
        printf("\n");
    }
}

void createSnake() {
    head = (struct Snake *) malloc(sizeof(struct Snake));
    head->x = WIDTH / 2;
    head->y = HEIGHT / 2;
    head->next = NULL;
    tail = head;
}

void createFood(char map[HEIGHT][WIDTH]) {
    srand((unsigned) time(NULL));
    while (1) {
        int x = rand() % (WIDTH - 2) + 1;
        int y = rand() % (HEIGHT - 2) + 1;
        if (map[y][x] == ' ') {
            food.x = x;
            food.y = y;
            map[food.y][food.x] = '@';
            break;
        }
    }
}

void moveSnake(char map[HEIGHT][WIDTH], int dx, int dy) {
    int newX = head->x + dx;
    int newY = head->y + dy;
    if (newX == food.x && newY == food.y) { // eat food
        score++;
        struct Snake *newHead = (struct Snake *) malloc(sizeof(struct Snake));
        newHead->x = newX;
        newHead->y = newY;
        newHead->next = head;
        head = newHead;
        map[newY][newX] = '*';
        createFood(map);
    } else { // move forward
        struct Snake *newHead = (struct Snake *) malloc(sizeof(struct Snake));
        newHead->x = newX;
        newHead->y = newY;
        newHead->next = head;
        head = newHead;
        map[newY][newX] = '*';
        map[tail->y][tail->x] = ' ';
        struct Snake *tmp = tail;
        tail = tail->next;
        free(tmp);
    }
}

int main() {
    char map[HEIGHT][WIDTH];
    initMap(map);
    createSnake();
    createFood(map);
    printMap(map);
    while (1) {
        if (_kbhit()) {
            char c = _getch();
            if (c == 'w' || c == 'W') {
                moveSnake(map, 0, -1);
            } else if (c == 'a' || c == 'A') {
                moveSnake(map, -1, 0);
            } else if (c == 's' || c == 'S') {
                moveSnake(map, 0, 1);
            } else if (c == 'd' || c == 'D') {
                moveSnake(map, 1, 0);
            } else if (c == 'q' || c == 'Q') {
                break;
            }
        } else {
            moveSnake(map, 0, 0);
        }
        printMap(map);
        Sleep(100);
    }
    return 0;
}

这个示例代码使用了简单的字符界面，使用wasd控制贪吃蛇的移动方向，每次吃到食物会增加分数并且贪吃蛇会变长，如果撞到墙或者自己的身体，游戏结束。