#include <stdio.h>
#include <conio.h>
#include <dos.h>
#include <graphics.h>
#define  MAXNUM  10
int hole[3][MAXNUM];
int plate_height[3]={0};

void drawplate(int x,int y,int wide)
{
 setfillstyle(SOLID_FILL,wide/20);
 bar(x-wide/2,y,x+wide/2,y+16-1);
 }

void eraseplate(int x,int y,int wide)
{
 setfillstyle(SOLID_FILL,BLACK);
 bar(x-wide/2,y,x+wide/2,y+16-1);

}

void move(int x,int y)
{
 int px,py,wide;

 if(getch()==27)
 {
  closegraph();
  exit(1);
   }
 wide=hole[x-1][plate_height[x-1]-1]*20;
 px=100+200*(x-1);
 py=480-plate_height[x-1]*16;
 eraseplate(px,py,wide);
 setfillstyle(SOLID_FILL,x-1+11);
 bar(100+200*(x-1)-5,py,100+200*(x-1)+5,py+16-1);

 hole[y-1][plate_height[y-1]]=hole[x-1][plate_height[x-1]-1];
 plate_height[x-1]--;
 plate_height[y-1]++;

 px=100+200*(y-1);
 py=480-plate_height[y-1]*16;
 drawplate(px,py,wide);

 delay(400);
  }
void hanoi(int n,int one,int two,int three)
{
 if(n==1)
    move(one,three);
 else
  {
   hanoi(n-1,one,three,two);
   move(one,three);
   hanoi(n-1,two,one,three);
    }
 }
void main()
 {
  int m,i;
  int gdriver=DETECT,gmode;
  printf("input the number of diskes:");
  scanf("%d",&m);
  if(m>10)
  {
    printf("Too many plates!\nYou would kill me?\n");
    return;
    }
  for(i=m;i>=1;i--)
    hole[0][m-i]=i;
  plate_height[0]=m;
  plate_height[1]=plate_height[2]=0;

  printf("press any key to see the moving steps.");
  getch();
  registerbgidriver(EGAVGA_driver);
  initgraph(&gdriver,&gmode,"");
  for(i=0;i<3;i++)
   {
     setfillstyle(SOLID_FILL,11+i);
     bar(100+200*i-5,480-16*12,100+200*i+5,480);
     }
  for(i=0;i<plate_height[0];i++)
  {
    int wide;
    wide=hole[0][i]*20;
    drawplate(100,480-(i+1)*16,wide);
    }
  hanoi(m,1,2,3);
  getch();
  closegraph();
   }