这段程序的图形界面能运行，只是蛇怎么也出不来，中间有显示器驱动函数。小生做了一晚上了，怎么也弄不明白，麻烦哪位高手能不厌其烦的把小生改写下，由于比较简单，就没加注解了。如果运行不成功，功劳就白费了具体代码如下：
#include <stdio.h>
#include <graphics.h>
#include <time.h>         //所需头文件
#include <dos.h>
#include <bios.h>
#define MAX_JOINTS 200   //最大节数
#define LEFT 0x4b00
#define RIGHT 0x4d00    //各键值
#define DOWN 0x5000
#define UP 0x4800
#define ESC 0x011b
#define MV_RIGHT 1
#define MV_LEFT  2      
#define MV_UP    3
#define MV_DOWN  4
void InitGraph(void);
void DrawFence(void);  
void GamePlay(void);
void GameOver(int score);
void PrScore(int score);
struct Food        
{
    int x;         
    int y;         
    int addFood;   
};
struct Snake
{
    int x[MAX_JOINTS];
    int y[MAX_JOINTS];
    int joint;
    int direction;
    int life;
};
void main(void)
{
    InitGraph();
    DrawFence();
    GamePlay();
    closegraph();
}
void InitGraph(void)
{
    int gd=DETECT,gm;
    initgraph(&gd,&gm,"");
    setbkcolor(BLUE);
    setcolor(WHITE);
    settextstyle(DEFAULT_FONT,HORIZ_DIR,3);
    outtextxy(170,150,"Greedy Snake");
    outtextxy(249,254,"Ready?");
    setcolor(BLUE);
}
void DrawFence(void)
{
    int i;
    setbkcolor(LIGHTGREEN);
    setcolor(11);
    setlinestyle(SOLID_LINE,0,THICK_WIDTH);
    for(i=50;i<=600;i+=10)
    {
       rectangle(i,40,i+10,49);
       rectangle(i,451,i+10,460);
    }
    for(i=40;i<=450;i+=10)
    {
       rectangle(50,i,59,i+10);
       rectangle(601,i,610,i+10);
    }
}
void GamePlay(void)
{
    int i,key;
    int gamespeed=22000;
    int score=0;
    struct Food food;
    struct Snake snake;
    food.addFood=1;
    snake.life=0;
    snake.direction=MV_RIGHT;
    snake.x[0]=100;snake.y[0]=100;
    snake.x[1]=110;snake.y[1]=100;
    snake.joint=2;
    PrScore(score);
    srand(time(NULL));
    while(1)
    {
        while(!kbhit())
        {
           if(food.addFood==1)
           {
                 food.x=rand()%400+60;
                 food.y=rand()%350+60;
                 while(food.x%10!=0)
                 {
                       food.x++;
                 }
                 while(food.y%10!=10)
                 {
                       food.y++;
                 }
                 food.addFood=0;
           }
           if(food.addFood==0)
           {
                setcolor(GREEN);
                rectangle(food.x,food.y,food.x+10,food.y-10);
           }
           for(i=snake.joint-1;i>0;i--)
           {
                 snake.x[i]=snake.x[i-1];
                 snake.y[i]=snake.y[i-i];
           }
           switch(snake.direction)
           {
                 case MV_RIGHT:snake.x[0]+=10; break;
                 case MV_LEFT:snake.x[0]-=10;  break;
                 case MV_UP:snake.y[0]-=10;    break;
                 case MV_DOWN:snake.y[0]+=10;  break;
           }
           for(i=3;i<snake.joint;i++)
           {
                 if(snake.x[i]==snake.x[0]&&snake.y[i]==snake.y[0])
                 {
                       GameOver(score);
                       snake.life=1;
                       break;
                 }
           }
           if(snake.x[0]<55||snake.x[0]>595||snake.y[0]<55||snake.y[0]>455)
           {
                  GameOver(score);
                  snake.life=1;
           }
           if(snake.life==1)  break;
           if(snake.x[0]==food.x&&snake.y[0]==food.y)
           {
              setcolor(0);
              rectangle(food.x,food.y,food.x+10,food.y-10);
              snake.x[snake.joint]=-20;snake.y[snake.joint]=-20;
              snake.joint++;
              food.addFood=1;
              score+=10;
              PrScore(score);
           }
           setcolor(4);
           for(i=0;i<snake.joint;i++)
           {
                 rectangle(snake.x[i],snake.y[i],snake.x[i]+10,snake.y[i]-10);
           }
           delay(gamespeed);
           setcolor(0);
           rectangle(snake.x[snake.joint-1],snake.y[snake.joint-1],
                     snake.x[snake.joint-1]+10,snake.y[snake.joint-1]-10);
        }
           if(snake.life==1) break;
           key=bioskey(0);
           if(key==ESC) break;
           else if(key==UP&&snake.direction!=4)
              snake.direction=MV_UP;
           else if(key==RIGHT&&snake.direction!=MV_LEFT)
              snake.direction=MV_RIGHT;
           else if(key==LEFT&&snake.direction!=MV_RIGHT)
              snake.direction=MV_LEFT;
           else if(key==DOWN&&snake.direction!=MV_UP)
              snake.direction=MV_DOWN;
    }
}
void GameOver(int score)
{
    cleardevice();
    PrScore(score);
    setcolor(RED);
    settextstyle(0,0,4);
    outtextxy(200,200,"Game over!");
    getch();
}
void PrScore(int score)
{
    char str[10];
    setfillstyle(SOLID_FILL,YELLOW);
    bar(50,15,220,35);
    setcolor(6);
    settextstyle(0,0,2);
    sprintf(str,"score:%d",score);
    outtextxy(55,20,str);
}