Tc wintc turbo c 写的有关图形的小程序 tc图形程序 带按键处理

在wintc下 写了一个有关圆的图像小程序；

#include<stdio.h>

#include<graphics.h>
#include<conio.h>
#include<bios.h>

up(int x,int y)
{
   cleardevice();
   circle(x,y+2,25);
}

down(int x,int y)
{
   cleardevice();
   circle(x,y+2,25);
}

left(int x,int y)
{
   cleardevice();
   circle(x+2,y,25);
}

right(int x,int y)
{
   cleardevice();
   circle(x-2,y,25);
}


void main()
{
  int gdriver,gmode,i=387,j=288;
  char key;
  printf("HELLO!!!\n Press any key to continue....");
  printf("written by Lin Duan \n");
  getch();
  gdriver=DETECT;
  registerbgidriver(EGAVGA_driver);
  initgraph(&gdriver,&gmode,"");
  setbkcolor(GREEN);
  setcolor(RED);
  circle(i,j,26);
  sleep(1);

system("pause");
printf("If you want to exit,press'......");
getch();
clrscr();
while(1)
      { key=getch();
       switch(key)
         {case 'w':
           up(i,j);
           j=j-2;
           continue;
         case 's':
          down(i,j);
          j=j+2;
           continue;
         case 'a':
           left(i,j);
           i=i-2;
           continue;
         case 'd':
           right(i,j);
           i=i+2;
           continue;
        case '`':
           exit(0);
          }
        }



   closegraph();
}

背景色，安健都可以自己随意改的