请帮我用c++生成一段面向过程的贪吃蛇代码

好的，以下是一段基于C++的面向过程的贪吃蛇代码。这段代码使用了Windows.h库，可以在Windows系统下运行。

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

const int width = 20;   // 游戏区宽度
const int height = 20;  // 游戏区高度

int x, y;               // 蛇头坐标
int fruitX, fruitY;     // 食物坐标
int tailX[100], tailY[100];  // 蛇尾坐标
int nTail;              // 蛇尾长度
int score;              // 得分

enum eDirection { STOP = 0, LEFT, RIGHT, UP, DOWN };
eDirection dir;

void Setup()
{
    srand(time(NULL));
    dir = STOP;
    x = width / 2;
    y = height / 2;
    fruitX = rand() % width;
    fruitY = rand() % height;
    score = 0;
    nTail = 0;
}

void Draw()
{
    system("cls");  // 清屏
    for (int i = 0; i < width + 2; i++)
        cout << "#";
    cout << endl;

    for (int i = 0; i < height; i++)
    {
        for (int j = 0; j < width; j++)
        {
            if (j == 0)
                cout << "#";
            if (i == y && j == x)
                cout << "O";
            else if (i == fruitY && j == fruitX)
                cout << "F";
            else
            {
                bool print = false;
                for (int k = 0; k < nTail; k++)
                {
                    if (tailX[k] == j && tailY[k] == i)
                    {
                        cout << "o";
                        print = true;
                    }
                }
                if (!print)
                    cout << " ";
            }
            if (j == width - 1)
                cout << "#";
        }
        cout << endl;
    }

    for (int i = 0; i < width + 2; i++)
        cout << "#";
    cout << endl;
    cout << "Score:" << score << endl;
}

void Input()
{
    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':
            dir = STOP;
            break;
        }
    }
}

void Logic()
{
    int prevX = tailX[0];
    int prevY = tailY[0];
    int prev2X, prev2Y;
    tailX[0] = x;
    tailY[0] = y;
    for (int i = 1; i < nTail; i++)
    {
        prev2X = tailX[i];
        prev2Y = tailY[i];
        tailX[i] = prevX;
        tailY[i] = prevY;
        prevX = prev2X;
        prevY = prev2Y;
    }

    switch (dir)
    {
    case LEFT:
        x--;
        break;
    case RIGHT:
        x++;
        break;
    case UP:
        y--;
        break;
    case DOWN:
        y++;
        break;
    default:
        break;
    }

    // 蛇碰墙
    if (x < 0 || x >= width || y < 0 || y >= height)
    {
        cout << "Game Over!" << endl;
        system("pause");
        exit(0);
    }

    // 蛇碰自己
    for (int i = 0; i < nTail; i++)
    {
        if (tailX[i] == x && tailY[i] == y)
        {
            cout << "Game Over!" << endl;
            system("pause");
            exit(0);
        }
    }

    // 蛇吃食物
    if (x == fruitX && y == fruitY)
    {
        score += 10;
        fruitX = rand() % width;
        fruitY = rand() % height;
        nTail++;
    }
}

int main()
{
    Setup();
    while (true)
    {
        Draw();
        Input();
        Logic();
        Sleep(100);
    }
    return 0;
}

这段代码使用了基本的图形绘制、输入输出、逻辑判断等操作，可以让你了解贪吃蛇游戏的基本实现方式。