康康map-
这种提示是连接错误（Linker error）。
一般可执行程序的过程是：源代码->目标代码（经过编译）->可执行程序（经过连接）。
你的问题就出在最后一步。那么为何出现这样的问题呢？
既然编译通过，说明你的源程序没问题。那么连接出错由什么原因引起的呢？
一般我们写程序不可能每个功能自己写，一些共用的功能（函数）被封装在库中（主要有两个文件:.h和.lib），你上面的错误说明graphics.h是存在的，所以没有编译错误，但是graphics.lib找不到，就不能进行连接。
解决方法：不管你用什么方法找到graphics.lib，复制到你编程环境中的LIB目录中去。
给你一个完整的贪吃蛇程序（要将TC拷贝至C盘下）：
/*共有两关，有记时器和记分器；
按Enter键开局；
在游戏过程中，按ESC键退出，按Enter键重新开局； */
#include <stdlib.h>
#include <graphics.h>
#include <bios.h>
#include <dos.h>
#include <conio.h>
#define Enter 7181
#define ESC 283
#define UP 18432
#define DOWN 20480
#define LEFT 19200
#define RIGHT 19712
#ifdef __cplusplus
#define __CPPARGS ...
#else
#define __CPPARGS
#endif
void interrupt (*oldhandler)(__CPPARGS);
void interrupt newhandler(__CPPARGS);
void SetTimer(void interrupt (*IntProc)(__CPPARGS));
void KillTimer(void);
void Initgra(void);
void TheFirstBlock(void);
void DrawMap(void);
void Initsnake(void);
void Initfood(void);
void Snake_Headmv(void);
void Flag(int,int,int,int);
void GameOver(void);
void Snake_Bodymv(void);
void Snake_Bodyadd(void);
void PrntScore(void);
void Timer(void);
void Win(void);
void TheSecondBlock(void);
void Food(void);
void Dsnkorfd(int,int,int);
void Delay(int);
struct Snake
{int x;int y;int color;}Snk[12];
struct Food
{int x;int y;int color;}Fd;
int flag1=1,flag2=0,flag3=0,flag4=0,flag5=0,flag6=0,
checkx,checky,num,key=0,Times,Score,Hscore,Snkspeed,TimerCounter,TureorFalse;
char Sco[2],Time[6];
void main()
{ Initgra();
SetTimer(newhandler);
TheFirstBlock();
while(1)
{DrawMap();
Snake_Headmv();
GameOver();
Snake_Bodymv();
Snake_Bodyadd();
PrntScore();
Timer();
Win();
if(key==ESC)
break;
if(key==Enter)
{cleardevice();
TheFirstBlock();
}
TheSecondBlock();
Food();
Delay(Snkspeed);
}
closegraph();
KillTimer();
}
void interrupt newhandler(__CPPARGS)
{
TimerCounter++;
oldhandler();
}
void SetTimer(void interrupt (*IntProc)(__CPPARGS))
{
oldhandler=getvect(0x1c);
disable();
setvect(0x1c,IntProc);
enable();
}
void KillTimer()
{
disable();
setvect(0x1c,oldhandler);
enable();
}
void Initgra()
{int gd=DETECT,gm;
initgraph(&gd,&gm,"C:\tc");
}
void TheFirstBlock()
{setcolor(11);
settextstyle(0,0,4);
outtextxy(100,220,"The First Block");
loop:key=bioskey(0);
if(key==Enter)
{cleardevice();
Initsnake();
Initfood();
Score=0;
Hscore=1;
Snkspeed=10;
num=2;
Times=0;
key=0;
TureorFalse=1;
TimerCounter=0;
Time[0]="0";Time[1]="0";Time[2]=":";Time[3]="1";Time[4]="0";Time[5]=" ";
}
else if(key==ESC) cleardevice();
else goto loop;
}
void DrawMap()
{line(10,10,470,10);
line(470,10,470,470);
line(470,470,10,470);
line(10,470,10,10);
line(480,20,620,20);
line(620,20,620,460);
line(620,460,480,460);
line(480,460,480,20);
}
void Initsnake()
{randomize();
num=2;
Snk[0].x=random(440);
Snk[0].x=Snk[0].x-Snk[0].x%20+50;
Snk[0].y=random(440);
Snk[0].y=Snk[0].y-Snk[0].y%20+50;
Snk[0].color=4;
Snk[1].x=Snk[0].x;
Snk[1].y=Snk[0].y+20;
Snk[1].color=4;
}
void Initfood()
{randomize();
Fd.x=random(440);
Fd.x=Fd.x-Fd.x%20+30;
Fd.y=random(440);
Fd.y=Fd.y-Fd.y%20+30;
Fd.color=random(14)+1;
}
void Snake_Headmv()
{if(bioskey(1))
{key=bioskey(0);
switch(key)
{case UP:Flag(1,0,0,0);break;
case DOWN:Flag(0,1,0,0);break;
case LEFT:Flag(0,0,1,0);break;
case RIGHT:Flag(0,0,0,1);break;
default:break;
}
}
if(flag1)
{checkx=Snk[0].x;
checky=Snk[0].y;
Dsnkorfd(Snk[0].x,Snk[0].y,0);
Snk[0].y-=20;
Dsnkorfd(Snk[0].x,Snk[0].y,Snk[0].color);
}
if(flag2)
{checkx=Snk[0].x;
checky=Snk[0].y;
Dsnkorfd(Snk[0].x,Snk[0].y,0);
Snk[0].y+=20;
Dsnkorfd(Snk[0].x,Snk[0].y,Snk[0].color);
}
if(flag3)
{checkx=Snk[0].x;
checky=Snk[0].y;
Dsnkorfd(Snk[0].x,Snk[0].y,0);
Snk[0].x-=20;
Dsnkorfd(Snk[0].x,Snk[0].y,Snk[0].color);
}
if(flag4)
{checkx=Snk[0].x;
checky=Snk[0].y;
Dsnkorfd(Snk[0].x,Snk[0].y,0);
Snk[0].x+=20;
Dsnkorfd(Snk[0].x,Snk[0].y,Snk[0].color);
}
}
void Flag(int a,int b,int c,int d)
{flag1=a;flag2=b;flag3=c;flag4=d;}
void GameOver()
{int i;
if(Snk[0].x<20||Snk[0].x>460||Snk[0].y<20||Snk[0].y>460)
{cleardevice();
setcolor(11);
settextstyle(0,0,4);
outtextxy(160,220,"Game Over");
loop1:key=bioskey(0);
if(key==Enter)
{cleardevice();
TheFirstBlock();
}
else
if(key==ESC)
cleardevice();
else
goto loop1;
}
for(i=3;i<num;i++)
{if(Snk[0].x==Snk[i].x&&Snk[0].y==Snk[i].y)
{cleardevice();
setcolor(11);
settextstyle(0,0,4);
outtextxy(160,220,"Game Over");
loop2:key=bioskey(0);
if(key==Enter)
{cleardevice();
TheFirstBlock();
}
else
if(key==ESC)
cleardevice();
else goto loop2;
}
}
}
void Snake_Bodymv()
{int i,s,t;
for(i=1;i<num;i++)
{Dsnkorfd(checkx,checky,Snk[i].color);
Dsnkorfd(Snk[i].x,Snk[i].y,0);
s=Snk[i].x;
t=Snk[i].y;
Snk[i].x=checkx;
Snk[i].y=checky;
checkx=s;
checky=t;
}
}
void Food()
{if(flag5)
{randomize();
Fd.x=random(440);
Fd.x=Fd.x-Fd.x%20+30;
Fd.y=random(440);
Fd.y=Fd.y-Fd.y%20+30;
Fd.color=random(14)+1;
flag5=0;
}
Dsnkorfd(Fd.x,Fd.y,Fd.color);
}
void Snake_Bodyadd()
{if(Snk[0].x==Fd.x&&Snk[0].y==Fd.y)
{if(Snk[num-1].x>Snk[num-2].x)
{num++;
Snk[num-1].x=Snk[num-2].x+20;
Snk[num-1].y=Snk[num-2].y;
Snk[num-1].color=Fd.color;
}
else
if(Snk[num-1].x<Snk[num-2].x)
{num++;
Snk[num-1].x=Snk[num-2].x-20;
Snk[num-1].y=Snk[num-2].y;
Snk[num-1].color=Fd.color;
}
else
if(Snk[num-1].y>Snk[num-2].y)
{num++;
Snk[num-1].x=Snk[num-2].x;
Snk[num-1].y=Snk[num-2].y+20;
Snk[num-1].color=Fd.color;
}
else
if(Snk[num-1].y<Snk[num-2].y)
{num++;
Snk[num-1].x=Snk[num-2].x;
Snk[num-1].y=Snk[num-2].y-20;
Snk[num-1].color=Fd.color;
}
flag5=1;
Score++;
}
}
void PrntScore()
{if(Hscore!=Score)
{setcolor(11);
settextstyle(0,0,3);
outtextxy(490,100,"SCORE");
setcolor(2);
setfillstyle(1,0);
rectangle(520,140,580,180);
floodfill(530,145,2);
Sco[0]=(char)(Score+48);
Sco[1]=" ";
Hscore=Score;
setcolor(4);
settextstyle(0,0,3);
outtextxy(540,150,Sco);
}
}
void Timer()
{if(TimerCounter>18)
{Time[4]=(char)(Time[4]-1);
if(Time[4]<"0")
{Time[4]="9";
Time[3]=(char)(Time[3]-1);
}
if(Time[3]<"0")
{Time[3]="5";
Time[1]=(char)(Time[1]-1);
}
if(TureorFalse)
{setcolor(11);
settextstyle(0,0,3);
outtextxy(490,240,"TIMER");
setcolor(2);
setfillstyle(1,0);
rectangle(490,280,610,320);
floodfill(530,300,2);
setcolor(11);
settextstyle(0,0,3);
outtextxy(495,290,Time);
TureorFalse=0;
}
if(Time[1]=="0"&&Time[3]=="0"&&Time[4]=="0")
{setcolor(11);
settextstyle(0,0,4);
outtextxy(160,220,"Game Over");
loop:key=bioskey(0);
if(key==Enter)
{cleardevice();
TheFirstBlock();
}
else if(key==ESC) cleardevice();
else goto loop;
}
TimerCounter=0;
TureorFalse=1;
}
}
void Win()
{if(Score==3)
Times++;
if(Times==2)
{cleardevice();
setcolor(11);
settextstyle(0,0,4);
outtextxy(160,220,"You Win");
loop:key=bioskey(0);
if(key==Enter)
{cleardevice();
TheFirstBlock();
key=0;
}
else if(key==ESC) cleardevice();
else goto loop;
}
}
void TheSecondBlock()
{if(Score==3)
{cleardevice();
setcolor(11);
settextstyle(0,0,4);
outtextxy(100,220,"The Second Block");
loop:key=bioskey(0);
if(key==Enter)
{cleardevice();
Initsnake();
Initfood();
Score=0;
Hscore=1;
Snkspeed=8;
num=2;
key=0;
}
else if(key==ESC) cleardevice();
else goto loop;
}
}
void Dsnkorfd(int x,int y,int color)
{setcolor(color);
setfillstyle(1,color);
circle(x,y,10);
floodfill(x,y,color);
}
void Delay(int times)
{int i;
for(i=1;i<=times;i++)
delay(15000);
}
clou-
initgraph(&gd,&gm,"D:study softwareWY_TCPP30E_B0810_skycnTCPP30E");
路径写错了，在路径中不能写 空格，反斜杠 应写成 “\”
建议把 几个 .BGI 文件拷贝到 d:BGI ，当然没有可以新建一个文件夹
initgraph(&gd,&gm,"D:\BGI");
豆豆staR-
一般可执行程序的过程是：源代码->目标代码（经过编译）->可执行程序（经过连接）。
贝贝-
在游戏过程中，按ESC键退出，按Enter键重新开局； */
#include <stdlib.h>
#include <graphics.h>
#include <bios.h>
#include <dos.h>
#include <conio.h>
#define Enter 7181
#define ESC 283
#define UP 18432
#define DOWN 20480
#define LEFT 19200
#define RIGHT 19712
#ifdef __cplusplus
#define __CPPARGS ...
#else
#define __CPPARGS
#endif
void interrupt (*oldhandler)(__CPPARGS);
void interrupt newhandler(__CPPARGS);
void SetTimer(void interrupt (*IntProc)(__CPPARGS));
void KillTimer(void);
void Initgra(void);
void TheFirstBlock(void);
void DrawMap(void);
void Initsnake(void);
void Initfood(void);
void Snake_Headmv(void);
void Flag(int,int,int,int);
void GameOver(void);
void Snake_Bodymv(void);
void Snake_Bodyadd(void);
void PrntScore(void);
void Timer(void);
void Win(void);
void TheSecondBlock(void);
void Food(void);
void Dsnkorfd(int,int,int);
void Delay(int);
struct Snake
{int x;int y;int color;}Snk[12];
struct Food
{int x;int y;int color;}Fd;
int flag1=1,flag2=0,flag3=0,flag4=0,flag5=0,flag6=0,
checkx,checky,num,key=0,Times,Score,Hscore,Snkspeed,TimerCounter,TureorFalse;
char Sco[2],Time[6];
void main()
{ Initgra();
SetTimer(newhandler);
TheFirstBlock();
while(1)
{DrawMap();
Snake_Headmv();
GameOver();
Snake_Bodymv();
Snake_Bodyadd();
PrntScore();
Timer();
Win();
if(key==ESC)
break;
if(key==Enter)
{cleardevice();
TheFirstBlock();
}
TheSecondBlock();
Food();
Delay(Snkspeed);
}
closegraph();
KillTimer();
}
void interrupt newhandler(__CPPARGS)
{
TimerCounter++;
oldhandler();
}
void SetTimer(void interrupt (*IntProc)(__CPPARGS))
{
oldhandler=getvect(0x1c);
disable();
setvect(0x1c,IntProc);
enable();
}
void KillTimer()
{
disable();
setvect(0x1c,oldhandler);
enable();
}
void Initgra()
{int gd=DETECT,gm;
initgraph(&gd,&gm,"C:\tc");
}
void TheFirstBlock()
{setcolor(11);
settextstyle(0,0,4);
outtextxy(100,220,"The First Block");
loop:key=bioskey(0);
if(key==Enter)
{cleardevice();
Initsnake();
Initfood();
Score=0;
Hscore=1;
Snkspeed=10;
num=2;
Times=0;
key=0;
TureorFalse=1;
TimerCounter=0;
Time[0]="0";Time[1]="0";Time[2]=":";Time[3]="1";Time[4]="0";Time[5]=" ";
}
else if(key==ESC) cleardevice();
else goto loop;
}
void DrawMap()
{line(10,10,470,10);
line(470,10,470,470);
line(470,470,10,470);
line(10,470,10,10);
line(480,20,620,20);
line(620,20,620,460);
line(620,460,480,460);
line(480,460,480,20);
}
void Initsnake()
{randomize();
num=2;
Snk[0].x=random(440);
Snk[0].x=Snk[0].x-Snk[0].x%20+50;
Snk[0].y=random(440);
Snk[0].y=Snk[0].y-Snk[0].y%20+50;
Snk[0].color=4;
Snk[1].x=Snk[0].x;
Snk[1].y=Snk[0].y+20;
Snk[1].color=4;
}