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

typedef struct snake
{
    int x, y;//座標
    int direction;//移動方向  上-1  左-2  下-3  右-4
    snake * next;
}*Msnake;

struct food
{
    int x, y;
}F;

char level[5];//等級
int lengt = 4;//蛇長度
int t1;
int score = 0;
int l;
int n = 0;
snake * creat();
void gotoxy(int x, int y);
void c(int k);
int time();
void ycgb(int k);
void game();
void draw(snake * head);
void newfood(snake * head);
int random();
int direc(char ch);
void key(snake * head, snake * p);
void cls();

int direc(char ch)
{
    if (ch == -32)
    {
        ch = getch();
        if (ch == 72) return 1;
        if (ch == 80) return 3;
        if (ch == 75) return 2;
        if (ch == 77) return 4;
    }
    return 0;
}

snake * creat()
{
    snake *head, *p, *q;
    head = (snake *) malloc (sizeof(snake));
    head->x = 28;
    head->y = 10;
    head->direction = 4;
    head->next = NULL;
    p = head;
    for (int i = 0; i < 3; i++)
    {
        q = (snake *) malloc (sizeof(snake));
        p->next = q;
        q->next = NULL;
        q->x = p->x + 2;
        q->y = p->y;
        q->direction = p->direction;
        p = q;
    }
    return head;
}

void showMain()
{
    int i;
    system("title 貪吃蛇");
    system("mode con cols=80 lines=30");
    gotoxy(28, 10);
    c(3);
    printf("歡迎進入貪吃蛇的世界！！");
    gotoxy(0, 0);
    c(252);
    for (i = 0; i < 40; i++)
    {
        printf("▇");
        Sleep(30);
    }
    for (i = 1; i < 25; i++)
    {
        gotoxy(78, i);
        printf("▇");
        Sleep(30);
    }
    for (i = 39; i >= 0; i--)
    {
        gotoxy(2*i, 25);
        printf("▇");
        Sleep(30);
    }
    for (i = 24; i >= 1; i--)
    {
        gotoxy(0, i);
        printf("▇");
        Sleep(30);
    }
    c(3);
    gotoxy(30, 11);
    printf("請選擇難度（1~6）：");
    scanf("%s", level);
    if (level[0] == '1') l = 600;else
    if (level[0] == '2') l = 400;else
    if (level[0] == '3') l = 200;else
    if (level[0] == '4') l = 150;else
    if (level[0] == '5') l = 100;else
    if (level[0] == '6') l = 60;else
    if (level[0] == '0') l = 2333;
    cls();
    c(15);
    gotoxy(4, 26);
    printf("等級： %c", level[0]);
    gotoxy(20, 26);
    printf("分數： %d", score);
    gotoxy(4, 27);
    printf("當前長度： %d", lengt);
    gotoxy(20, 27);
    printf("已吃食物個數： %d", n);
    gotoxy(45, 26);
    printf("移動：↑↓←→");
    gotoxy(45, 27);
    printf("暫停or繼續：空格");
    gotoxy(67, 27);
    c(2);
    printf("製作：MeiK");
}

void key(snake * head, snake * p)
{
    char ch;
    int i, j;
    if (kbhit())
    {
        ch = getch();
        if (ch == -32)
        {
            i = direc(ch);
            j = p->direction;
            if ((i==1&&j==3)||(i==2&&j==4)||(i==3&&j==1)||(i==4&&j==2));
            else
                p->direction = i;
        }else
            if (ch == 32)
            {
                cls();
                gotoxy(36,10);
                printf("暫停中");
                while (1)
                {
                    if (kbhit() && getch() == 32)
                    {
                        gotoxy(36,10);
                        printf("     ");
                        draw(head);
                        gotoxy(F.x, F.y);
                        c(14);
                        printf("●");
                        break;
                    }
                }
            }
    }
}

void cls()
{
    gotoxy(2, 1);
    for (int i = 1; i < 26; i++)
    {
        for (int j = 2; j < 78; j++)
            printf(" ");
        gotoxy(2, i);
    }
}

void game()
{
    snake *head, *p, *q, *s;
    head = creat();
    p = head;
    s = head;
    while (p->next)
        p = p->next;
    draw(head);
    newfood(head);
    while (1)
    {
        q = (snake *) malloc (sizeof(snake));
        p->next = q;
        q->direction = p->direction;
        q->next = NULL;
        switch(p->direction)
        {
            case 1: q->x = p->x; q->y = p->y - 1; break;
            case 2: q->x = p->x - 2; q->y = p->y; break;
            case 3: q->x = p->x; q->y = p->y + 1; break;
            case 4: q->x = p->x + 2; q->y = p->y; break;
        }
        if (q->x == F.x && q->y == F.y)
        {
            gotoxy(p->x, p->y);
            c(15);
            printf("●");
            gotoxy(q->x, q->y);
            c(12);
            printf("◆");
            p = q;
            score = score + (level[0]-'0');
            lengt++;
            n++;
            c(15);
            gotoxy(20, 26);
            printf("分數： %d", score);
            gotoxy(4, 27);
            printf("當前長度： %d", lengt);
            gotoxy(20, 27);
            printf("已吃食物個數： %d", n);
            newfood(head);
        }else
        {
            gotoxy(head->x, head->y);
            printf(" ");
            head = head->next;
            free(s);
            gotoxy(head->x, head->y);
            c(12);
            printf("●");
            gotoxy(p->x, p->y);
            c(15);
            printf("●");
            gotoxy(q->x, q->y);
            c(12);
            printf("◆");
            p = q;
        }
        //newfood(head);
        Sleep(l);
        key(head, q);
        if (q->x==0||q->x==78||q->y==0||q->y==25)//碰牆結束
        {
            cls();
            gotoxy(30, 10);
            printf("您的分數為%d", score);
            Sleep(2500);
            score = 0;
            n = 4;
            lengt = 0;
            return;
        }
        s = head;
        while (s->next)
        {
            if (q->x == s->x && q->y == s->y)//碰自己結束
            {
                cls();
                gotoxy(30, 10);
                printf("您的分數為%d", score);
                Sleep(2500);
                score = 0;
                n = 4;
                lengt = 0;
                return;
            }
            s = s->next;
        }
        s = head;
    }
}

int random()//用來輸出隨機值
{
    srand(time()+rand());//將隨機數種子初始化
    return rand();//返回隨機數
}

void newfood(snake * head)
{
    snake *p;
    p = head;
    int f = 1;
    F.x = random() % 76 + 1;
    if (F.x&1) F.x++;
    F.y = random() % 24 + 1;
    while (p)
    {
        if (p->x == F.x && p->y == F.y)
        {
            f = 0;
            break;
        }
        p = p->next;
    }
    if (f)
    {
        c(14);
        gotoxy(F.x, F.y);
        printf("●");
    }
    else newfood(head);
}

void draw(snake * head)
{
    gotoxy(head->x, head->y);
    c(12);
    printf("●");
    c(15);
    head = head->next;
    while (head->next)
    {
        gotoxy(head->x, head->y);
        printf("●");
        head = head->next;
    }
    c(12);
    gotoxy(head->x, head->y);
    printf("◆");
}

void c(int k)//改變輸出字型的顏色
{
    SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), k);
}

int time()//用來計時
{
    clock_t t=clock()/CLOCKS_PER_SEC;
    return t;
}

void gotoxy(int x,int y) //移動座標
{
    COORD coord;
    coord.X=x;
    coord.Y=y;
    SetConsoleCursorPosition( GetStdHandle( STD_OUTPUT_HANDLE ), coord );
}

void ycgb(int k)//隱藏游標
{
    HANDLE hOut = GetStdHandle(STD_OUTPUT_HANDLE);
    CONSOLE_CURSOR_INFO cci;
    GetConsoleCursorInfo(hOut,&cci);
    cci.bVisible=k;//賦1為顯示，賦0為隱藏
    SetConsoleCursorInfo(hOut,&cci);
}

int main()
{
    ycgb(0);
    showMain();
    game();
    while (1)
    {
        gotoxy(2, 1);
        for (int i = 1; i < 26; i++)
        {
            for (int j = 2; j < 78; j++)
                printf(" ");
            gotoxy(2, i);
        }
        gotoxy(32,10);
        printf("按回車可重新開始遊戲！");
        gotoxy(36,11);
        printf("按Esc可離開遊戲！");
        char ch;
        ch = getch();
        while (ch != 13 && ch != 27)
        {
            ch = getch();
        }
        if (ch == 13)
        {
            showMain();
            game();
        }
        else break;
    }
    return 0;
}
 

因為寒假在家無聊  於是用了兩天寫了這個貪吃蛇程式碼  因為是我第二個寫的遊戲（第一個是無比簡單的走迷宮...）還有諸多不足之處  介面粗糙  希望大家能多多包涵

之後寫了另一個貪吃蛇  在這個的基礎上加上了一點優化和自定義移動速度等功能  但是程式碼實現太冗贅  實在不好意思貼出來  就貼這個最初版吧  歡迎大家提意見  我會積極改正的