用C语言写一个贪吃蛇程序

好的，以下是一个简单的贪吃蛇程序的C语言实现：

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

int height = 20, width = 20;
int x, y, fruitX, fruitY, score, gameOver;
int tailX[100], tailY[100], nTail;

void Setup()
{
    gameOver = 0;
    x = width / 2;
    y = height / 2;
    fruitX = rand() % width;
    fruitY = rand() % height;
    score = 0;
}

void Draw()
{
    system("cls");
    for (int i = 0; i < width+2; i++)
        printf("#");
    printf("\n");

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

            if (j == width - 1)
                printf("#");
        }
        printf("\n");
    }

    for (int i = 0; i < width+2; i++)
        printf("#");
    printf("\n");

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

void Input()
{
    if (_kbhit())
    {
        switch (_getch())
        {
        case 'a':
            x--;
            break;
        case 'd':
            x++;
            break;
        case 'w':
            y--;
            break;
        case 's':
            y++;
            break;
        case 'x':
            gameOver = 1;
            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 (_getch())
    {
    case 'a':
        x--;
        break;
    case 'd':
        x++;
        break;
    case 'w':
        y--;
        break;
    case 's':
        y++;
        break;
    case 'x':
        gameOver = 1;
        break;
    }
    if (x >= width)
        x = 0;
    else if (x < 0)
        x = width - 1;
    if (y >= height)
        y = 0;
    else if (y < 0)
        y = height - 1;
    for (int i = 0; i < nTail; i++)
        if (tailX[i] == x && tailY[i] == y)
            gameOver = 1;
    if (x == fruitX && y == fruitY)
    {
        score += 10;
        fruitX = rand() % width;
        fruitY = rand() % height;
        nTail++;
    }
}

int main()
{
    Setup();
    while (!gameOver)
    {
        Draw();
        Input();
        Logic();
        Sleep(20);
    }
    return 0;
}

这个程序可以在控制台中玩贪吃蛇游戏。如果您想打印带颜色的输出，请使用 `<windows.h>` 头文件中的 `SetConsoleTextAttribute()` 函数。