帮我用c语言写一个贪吃蛇的代码

以下是一个简单的贪吃蛇游戏的C语言代码，你可以根据需要进行修改和优化：

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

#define WIDTH 10
#define HEIGHT 20

int x, y, foodx, foody, score, gameover;
int tailx[100], taily[100], counttail = 0;

void setup()
{
    gameover = 0;
    x = WIDTH / 2;
    y = HEIGHT / 2;
    srand(time(NULL));
    foodx = rand() % WIDTH;
    foody = rand() % HEIGHT;
    score = 0;
}

void draw()
{
    int i, j, k;
    system("cls");
    for (i = 0; i < WIDTH + 2; i++)
        printf("#");
    printf("\n");
    for (i = 0; i < HEIGHT; i++)
    {
        for (j = 0; j < WIDTH; j++)
        {
            if (j == 0)
                printf("#");
            if (i == y && j == x)
                printf("0");
            else if (i == foody && j == foodx)
                printf("F");
            else
            {
                int print = 0;
                for (k = 0; k < counttail; k++)
                {
                    if (tailx[k] == j && taily[k] == i)
                    {
                        printf("o");
                        print = 1;
                    }
                }
                if (!print)
                    printf(" ");
            }
            if (j == WIDTH - 1)
                printf("#");
        }
        printf("\n");
    }
    for (i = 0; i < WIDTH + 2; i++)
        printf("#");
    printf("\n");
    printf("SCORE:%d\n", score);
}

void input()
{
    if (_kbhit())
    {
        switch (_getch())
        {
        case 'a':
            x--;
            break;
        case 'd':
            x++;
            break;
        case 'w':
            y--;
            break;
        case 's':
            y++;
            break;
        case 'x':
            gameover = 1;
            break;
        }
    }
}

void logic()
{
    int i;
    int prevx = tailx[0];
    int prevy = taily[0];
    int prev2x, prev2y;
    tailx[0] = x;
    taily[0] = y;
    for (i = 1; i < counttail; i++)
    {
        prev2x = tailx[i];
        prev2y = taily[i];
        tailx[i] = prevx;
        taily[i] = prevy;
        prevx = prev2x;
        prevy = prev2y;
    }
    switch (_getch())
    {
    case 'a':
        x--;
        break;
    case 'd':
        x++;
        break;
    case 'w':
        y--;
        break;
    case 's':
        y++;
        break;
    case 'x':
        gameover = 1;
        break;
    }
    if (x < 0 || x >= WIDTH || y < 0 || y >= HEIGHT)
        gameover = 1;
    for (i = 0; i < counttail; i++)
    {
        if (tailx[i] == x && taily[i] == y)
            gameover = 1;
    }
    if (x == foodx && y == foody)
    {
        srand(time(NULL));
        foodx = rand() % WIDTH;
        foody = rand() % HEIGHT;
        score += 10;
        counttail++;
    }
}

int main()
{
    setup();
    while (!gameover)
    {
        draw();
        input();
        logic();
    }
    printf("GAME OVER\n");
    printf("YOUR SCORE:%d\n", score);
    return 0;
}