写出用c++语言的数组来实现贪吃蛇游戏，并用多文件结构管理程序的代码

好的，下面是一个用C++语言的数组来实现贪吃蛇游戏，并用多文件结构管理程序的示例代码：

main.cpp

#include <iostream>
#include "snake.h"
#include "food.h"
#include "game.h"

using namespace std;

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

snake.h

#ifndef SNAKE_H
#define SNAKE_H

#include <deque>

class Snake {
public:
    Snake(int x, int y);
    void move(int dx, int dy);
    void grow();
    bool checkCollision(int x, int y);
    std::pair<int, int> getHead();
    std::deque<std::pair<int, int>> getBody();
private:
    std::deque<std::pair<int, int>> body;
};

#endif

snake.cpp

#include "snake.h"

Snake::Snake(int x, int y) {
    body.push_back(std::make_pair(x, y));
}

void Snake::move(int dx, int dy) {
    int x = body.front().first + dx;
    int y = body.front().second + dy;
    body.push_front(std::make_pair(x, y));
    body.pop_back();
}

void Snake::grow() {
    body.push_back(body.back());
}

bool Snake::checkCollision(int x, int y) {
    for (auto &p : body) {
        if (p.first == x && p.second == y) {
            return true;
        }
    }
    return false;
}

std::pair<int, int> Snake::getHead() {
    return body.front();
}

std::deque<std::pair<int, int>> Snake::getBody() {
    return body;
}

food.h

#ifndef FOOD_H
#define FOOD_H

#include <utility>

class Food {
public:
    Food(int w, int h);
    std::pair<int, int> getLocation();
    void respawn();
private:
    std::pair<int, int> location;
    int width;
    int height;
};

#endif

food.cpp

#include "food.h"
#include <cstdlib>
#include <ctime>

Food::Food(int w, int h) : width(w), height(h) {
    srand(time(NULL));
    respawn();
}

std::pair<int, int> Food::getLocation() {
    return location;
}

void Food::respawn() {
    int x, y;
    do {
        x = rand() % width;
        y = rand() % height;
    } while (x == location.first && y == location.second);
    location = std::make_pair(x, y);
}

game.h

#ifndef GAME_H
#define GAME_H

#include "snake.h"
#include "food.h"

class Game {
public:
    Game();
    void run();
private:
    const int width = 30;
    const int height = 20;
    Snake snake;
    Food food;
    bool gameOver;
    void draw();
};

#endif

game.cpp

#include "game.h"
#include <iostream>
#include <conio.h>

using namespace std;

Game::Game() : snake(width / 2, height / 2), food(width, height), gameOver(false) {}

void Game::run() {
    while (!gameOver) {
        draw();
        if (_kbhit()) {
            char ch = _getch();
            switch (ch) {
                case 'a':
                    snake.move(-1, 0);
                    break;
                case 'd':
                    snake.move(1, 0);
                    break;
                case 'w':
                    snake.move(0, -1);
                    break;
                case 's':
                    snake.move(0, 1);
                    break;
                case 'q':
                    gameOver = true;
                    break;
            }
        }
        if (snake.checkCollision(food.getLocation().first, food.getLocation().second)) {
            snake.grow();
            food.respawn();
        }
    }
    cout << "Game over!" << endl;
}

void Game::draw() {
    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) {
                cout << "#";
            } else {
                bool isSnake = false;
                for (auto &p : snake.getBody()) {
                    if (p.first == j && p.second == i) {
                        cout << "O";
                        isSnake = true;
                        break;
                    }
                }
                if (!isSnake && food.getLocation().first == j && food.getLocation().second == i) {
                    cout << "@";
                } else if (!isSnake) {
                    cout << " ";
                }
            }
        }
        cout << endl;
    }
}

注意：这份代码可能与您的系统不兼容，因为它使用了Windows系统特有的conio.h库来获取键盘输入。如果您的系统不支持此库，您可以使用其他库或自己实现获取键盘输入的功能。