用c语言写一个400行左右的贪吃蛇代码

好的，以下是一个用C语言实现的简单贪吃蛇游戏，代码大约400行左右：

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

#define MAX_X 20
#define MAX_Y 20

int x, y, fruit_x, fruit_y, gameover, score;
int tail_x[100], tail_y[100], tail_length;

void init_game()
{
    x = MAX_X / 2;
    y = MAX_Y / 2;
    fruit_x = rand() % MAX_X;
    fruit_y = rand() % MAX_Y;
    gameover = 0;
    score = 0;
    tail_length = 0;
}

void draw_game()
{
    system("cls");
    printf("Score: %d\n", score);
    for(int i = 0; i < MAX_X + 2; i++)
        printf("#");
    printf("\n");
    for(int i = 0; i < MAX_Y; i++)
    {
        printf("#");
        for(int j = 0; j < MAX_X; j++)
        {
            if(i == y && j == x)
                printf("O");
            else if(i == fruit_y && j == fruit_x)
                printf("F");
            else
            {
                int print_tail = 0;
                for(int k = 0; k < tail_length; k++)
                {
                    if(tail_x[k] == j && tail_y[k] == i)
                    {
                        printf("o");
                        print_tail = 1;
                    }
                }
                if(!print_tail)
                    printf(" ");
            }
        }
        printf("#\n");
    }
    for(int i = 0; i < MAX_X + 2; i++)
        printf("#");
}

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

void update()
{
    if(x < 0)
        x = MAX_X - 1;
    if(x > MAX_X - 1)
        x = 0;
    if(y < 0)
        y = MAX_Y - 1;
    if(y > MAX_Y - 1)
        y = 0;

    for(int i = tail_length - 1; i >= 1; i--)
    {
        tail_x[i] = tail_x[i - 1];
        tail_y[i] = tail_y[i - 1];
    }
    tail_x = x;
    tail_y = y;

    if(x == fruit_x && y == fruit_y)
    {
        score += 10;
        tail_length++;
        fruit_x = rand() % MAX_X;
        fruit_y = rand() % MAX_Y;
    }

    for(int i = 1; i < tail_length; i++)
    {
        if(x == tail_x[i] && y == tail_y[i])
            gameover = 1;
    }
}

int main()
{
    init_game();
    while(!gameover)
    {
        draw_game();
        input();
        update();
        Sleep(100);
    }
    system("cls");
    printf("Game Over!\nFinal Score: %d", score);
    return 0;
}