来个C语言贪吃蛇的代码

### 回答1：
#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <windows.h>

#define WIDTH 20
#define HEIGHT 20

int score = ;
int speed = 200;

typedef struct _COORD {
int x;
int y;
} COORD;

typedef struct _SNAKE {
COORD head;
COORD body[WIDTH * HEIGHT];
int length;
int direction;
} SNAKE;

typedef struct _FOOD {
COORD pos;
int exist;
} FOOD;

void gotoxy(int x, int y) {
COORD pos = { x, y };
SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), pos);
}

void init(SNAKE* snake, FOOD* food) {
snake->head.x = WIDTH / 2;
snake->head.y = HEIGHT / 2;
snake->body[].x = snake->head.x - 1;
snake->body[].y = snake->head.y;
snake->body[1].x = snake->head.x - 2;
snake->body[1].y = snake->head.y;
snake->length = 2;
snake->direction = 'd';

food->exist = ;
}

void draw(SNAKE* snake, FOOD* food) {
system("cls");
for (int i = ; i < WIDTH + 2; i++) {
printf("#");
}
printf("\n");

for (int i = ; i < HEIGHT; i++) {
printf("#");
for (int j = ; j < WIDTH; j++) {
if (i == snake->head.y && j == snake->head.x) {
printf("O");
}
else if (i == food->pos.y && j == food->pos.x && food->exist) {
printf("F");
}
else {
int flag = ;
for (int k = ; k < snake->length; k++) {
if (i == snake->body[k].y && j == snake->body[k].x) {
printf("o");
flag = 1;
break;
}
}
if (!flag) {
printf(" ");
}
}
}
printf("#\n");
}

for (int i = ; i < WIDTH + 2; i++) {
printf("#");
}
printf("\n");

printf("Score: %d\n", score);
}

void update(SNAKE* snake, FOOD* food) {
COORD temp = snake->body[snake->length - 1];
for (int i = snake->length - 1; i > ; i--) {
snake->body[i] = snake->body[i - 1];
}
snake->body[] = snake->head;
snake->head = temp;

switch (snake->direction) {
case 'w':
snake->head.y--;
break;
case 'a':
snake->head.x--;
break;
case 's':
snake->head.y++;
break;
case 'd':
snake->head.x++;
break;
}

if (snake->head.x < || snake->head.x >= WIDTH || snake->head.y < || snake->head.y >= HEIGHT) {
printf("Game Over!\n");
exit();
}

for (int i = ; i < snake->length; i++) {
if (snake->head.x == snake->body[i].x && snake->head.y == snake->body[i].y) {
printf("Game Over!\n");
exit();
}
}

if (snake->head.x == food->pos.x && snake->head.y == food->pos.y) {
score += 10;
snake->length++;
if (speed > 50) {
speed -= 10;
}
food->exist = ;
}
}

void generate_food(FOOD* food) {
if (!food->exist) {
food->pos.x = rand() % WIDTH;
food->pos.y = rand() % HEIGHT;
food->exist = 1;
}
}

void input(SNAKE* snake) {
if (_kbhit()) {
char c = _getch();
switch (c) {
case 'w':
case 'a':
case 's':
case 'd':
if (abs(snake->direction - c) != 2) {
snake->direction = c;
}
break;
}
}
}

int main() {
srand((unsigned)time(NULL));

SNAKE snake;
FOOD food;

init(&snake, &food);

while (1) {
draw(&snake, &food);
update(&snake, &food);
generate_food(&food);
input(&snake);
Sleep(speed);
}

return ;
}

### 回答2：
以下是一个基于 C 语言的简单贪吃蛇游戏的代码：

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

#define WIDTH 20    // 游戏界面的宽度
#define HEIGHT 20   // 游戏界面的高度

int score = 0;  // 当前得分
int gameOver = 0;   // 游戏是否结束

int snakeX, snakeY;     // 蛇头的坐标
int fruitX, fruitY;     // 水果的坐标

int tailX[100], tailY[100]; // 蛇身的坐标数组
int nTail = 0;  // 当前蛇身的长度

enum Direction { STOP = 0, LEFT, RIGHT, UP, DOWN };   // 蛇的移动方向
enum Direction dir;

void Setup()
{
    gameOver = 0;
    dir = STOP;

    // 设置初始位置
    snakeX = WIDTH / 2;
    snakeY = HEIGHT / 2;

    // 在随机位置生成水果
    srand(time(NULL));
    fruitX = rand() % WIDTH;
    fruitY = rand() % HEIGHT;

    score = 0;
}

void Draw()
{
    system("cls");      // 清空控制台

    // 打印上边界
    for (int i = 0; i < WIDTH + 2; i++)
        printf("#");
    printf("\n");

    // 打印每一行
    for (int i = 0; i < HEIGHT; i++)
    {
        for (int j = 0; j < WIDTH; j++)
        {
            // 打印左边界、蛇头、蛇身、水果等
            if (j == 0)
                printf("#");
            if (i == snakeY && j == snakeX)
                printf("O");
            else if (i == fruitY && j == fruitX)
                printf("F");
            else
            {
                int isTail = 0;
                for (int k = 0; k < nTail; k++)
                {
                    // 打印蛇身
                    if (tailX[k] == j && tailY[k] == i)
                    {
                        printf("o");
                        isTail = 1;
                    }
                }
                if (!isTail)
                    printf(" ");
            }

            // 打印右边界
            if (j == WIDTH - 1)
                printf("#");
        }
        printf("\n");
    }

    // 打印下边界
    for (int i = 0; i < WIDTH + 2; i++)
        printf("#");
    printf("\n");

    // 打印得分
    printf("Score: %d\n", score);
}

void Input()
{
    // 判断按键
    if (_kbhit())
    {
        switch (_getch())
        {
        case 'a':
            dir = LEFT;
            break;
        case 'd':
            dir = RIGHT;
            break;
        case 'w':
            dir = UP;
            break;
        case 's':
            dir = DOWN;
            break;
        case 'x':
            gameOver = 1;
            break;
        }
    }
}

void Logic()
{
    // 更新蛇身的坐标
    int prevX = tailX[0];
    int prevY = tailY[0];
    int prev2X, prev2Y;

    tailX[0] = snakeX;
    tailY[0] = snakeY;

    for (int i = 1; i < nTail; i++)
    {
        prev2X = tailX[i];
        prev2Y = tailY[i];
        tailX[i] = prevX;
        tailY[i] = prevY;
        prevX = prev2X;
        prevY = prev2Y;
    }

    // 更新蛇头的坐标
    switch (dir)
    {
    case LEFT:
        snakeX--;
        break;
    case RIGHT:
        snakeX++;
        break;
    case UP:
        snakeY--;
        break;
    case DOWN:
        snakeY++;
        break;
    }

    // 检查蛇是否碰到边界或自己的身体
    if (snakeX < 0 || snakeX >= WIDTH || snakeY < 0 || snakeY >= HEIGHT)
        gameOver = 1;

    for (int i = 0; i < nTail; i++)
        if (tailX[i] == snakeX && tailY[i] == snakeY)
            gameOver = 1;

    // 检查是否吃到水果
    if (snakeX == fruitX && snakeY == fruitY)
    {
        score += 10;
        fruitX = rand() % WIDTH;
        fruitY = rand() % HEIGHT;
        nTail++;
    }
}

int main()
{
    Setup();

    while (!gameOver)
    {
        Draw();
        Input();
        Logic();
        Sleep(10);  // 控制游戏速度
    }

    return 0;
}

这段代码实现了一个简单的贪吃蛇游戏。游戏界面为一个矩形框，蛇头用大写字母 "O" 表示，蛇身用小写字母 "o" 表示，水果用字母 "F" 表示。通过键盘的方向键控制蛇的移动方向，游戏结束条件为蛇碰到边界或自己的身体。吃到水果会得分，并在随机位置生成新的水果。游戏使用 Windows.h 头文件中的 Sleep 函数控制游戏速度。

### 回答3：
下面是一个简单的C语言贪吃蛇的代码示例：

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

#define WIDTH 20
#define HEIGHT 20
#define UP 'w'
#define DOWN 's'
#define LEFT 'a'
#define RIGHT 'd'
#define INIT_LENGTH 3

typedef struct
{
    int x;
    int y;
} Coordinate;

Coordinate body[WIDTH*HEIGHT];
Coordinate food;
int length = INIT_LENGTH;
char dir = RIGHT;

void drawBoard()
{
    system("cls");
    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) {
                printf("*");
            } else if (i == food.y && j == food.x) {
                printf("@");
            } else {
                int isBodyPart = 0;
                for (int k = 0; k < length; k++) {
                    if (body[k].x == j && body[k].y == i) {
                        printf("O");
                        isBodyPart = 1;
                        break;
                    }
                }
                if (!isBodyPart) {
                    printf(" ");
                }
            }
        }
        printf("\n");
    }
}

void generateFood()
{
    srand(time(NULL));
    while (1) {
        int x = rand() % (WIDTH - 2) + 1;
        int y = rand() % (HEIGHT - 2) + 1;
        int isOnBody = 0;
        for (int i = 0; i < length; i++) {
            if (x == body[i].x && y == body[i].y) {
                isOnBody = 1;
                break;
            }
        }
        if (!isOnBody) {
            food.x = x;
            food.y = y;
            break;
        }
    }
}

int isGameOver()
{
    if (body[0].x <= 0 || body[0].x >= WIDTH-1 || body[0].y <= 0 || body[0].y >= HEIGHT-1) {
        return 1;
    }
    for (int i = 1; i < length; i++) {
        if (body[0].x == body[i].x && body[0].y == body[i].y) {
            return 1;
        }
    }
    return 0;
}

void move()
{
    for (int i = length-1; i > 0; i--) {
        body[i].x = body[i-1].x;
        body[i].y = body[i-1].y;
    }
    switch (dir) {
        case UP:
            body[0].y--;
            break;
        case DOWN:
            body[0].y++;
            break;
        case LEFT:
            body[0].x--;
            break;
        case RIGHT:
            body[0].x++;
            break;
    }

    if (body[0].x == food.x && body[0].y == food.y) {
        length++;
        generateFood();
    }
}

int main()
{
    generateFood();

    while (!isGameOver()) {
        if (_kbhit()) {
            dir = _getch();
        }
        move();
        drawBoard();
        usleep(300000);
    }

    printf("Game Over!");

    return 0;
}

该代码使用了Windows特定的函数 `_kbhit()` 和 `_getch()` 来监听键盘输入，因此需要在Windows环境下编译运行。