用c语言写一个贪吃蛇游戏，并提供源代码

很高兴为您解答这个问题！以下是使用C语言编写贪吃蛇游戏的源代码，供您参考：

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

#define WIDTH 50
#define HEIGHT 20

int score;
int length;
int snakeX[100], snakeY[100];
int foodX, foodY;
int direction;
int gameOver;

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

void init() {
    srand(time(NULL));
    score = 0;
    length = 3;
    snakeX[0] = WIDTH / 2;
    snakeY[0] = HEIGHT / 2;
    snakeX[1] = snakeX[0] - 1;
    snakeY[1] = snakeY[0];
    snakeX[2] = snakeX[1] - 1;
    snakeY[2] = snakeY[1];
    foodX = rand() % WIDTH;
    foodY = rand() % HEIGHT;
    direction = 'd';
    gameOver = 0;
}

void draw() {
    int i, j;
    system("cls");
    for (i = 0; i < WIDTH + 2; i++) {
        printf("#");
    }
    printf("\n");
    for (i = 0; i < HEIGHT; i++) {
        printf("#");
        for (j = 0; j < WIDTH; j++) {
            if (i == snakeY[0] && j == snakeX[0]) {
                printf("O");
            } else if (i == foodY && j == foodX) {
                printf("F");
            } else {
                int printed = 0;
                int k;
                for (k = 1; k < length; k++) {
                    if (i == snakeY[k] && j == snakeX[k]) {
                        printf("o");
                        printed = 1;
                        break;
                    }
                }
                if (!printed) {
                    printf(" ");
                }
            }
        }
        printf("#");
        printf("\n");
    }
    for (i = 0; i < WIDTH + 2; i++) {
        printf("#");
    }
    printf("\n");
    printf("Score: %d\n", score);
}

void input() {
    if (_kbhit()) {
        switch (_getch()) {
            case 'a':
                if (direction != 'd') {
                    direction = 'a';
                }
                break;
            case 'd':
                if (direction != 'a') {
                    direction = 'd';
                }
                break;
            case 'w':
                if (direction != 's') {
                    direction = 'w';
                }
                break;
            case 's':
                if (direction != 'w') {
                    direction = 's';
                }
                break;
            case 'x':
                gameOver = 1;
                break;
        }
    }
}

void logic() {
    int i;
    int prevX = snakeX[0], prevY = snakeY[0];
    int prev2X, prev2Y;
    snakeX[0] = snakeX[0] + (direction == 'd' ? 1 : (direction == 'a' ? -1 : 0));
    snakeY[0] = snakeY[0] + (direction == 's' ? 1 : (direction == '