#include<iostream.h>
 #include<graphics.h>
 #include<stdlib.h>
 #include<conio.h>
 #include<dos.h>

 /*************************************************************************///------------------------------  rect  ---------------------------------///*************************************************************************/class rect
    {
       public:
        void draw_rect(int,int,int,int,int);
    };

 /*************************************************************************///----------------------------  fill_rect  ------------------------------///*************************************************************************/class fill_rect:public rect
    {
       public:
        void draw_rect(int,int,int,int,int,int,int);
    };

 /*************************************************************************///---------------------------  animate_rect  ----------------------------///*************************************************************************/class animate_rect:public fill_rect
    {
       public:
        void draw_rect(int,int,int,int,int,int,int);
    };

 /*************************************************************************///----------------  draw_rect(int,int,int,int,int)  ---------------------///*************************************************************************/void rect::draw_rect(int x1,int y1,int x2,int y2,int boundry_color)
    {
       setcolor(boundry_color);
       rectangle(x1,y1,x2,y2);
    }


 /*************************************************************************///------------  draw_rect(int,int,int,int,int,int,int)  -----------------///*************************************************************************/void fill_rect::draw_rect(int x1,int y1,int x2,int y2,int boundry_color,
                        int pattern,int pattern_color)
    {
       rect::draw_rect(x1,y1,x2,y2,boundry_color);

       struct fillsettingstype t;

       getfillsettings(&t);

       setfillstyle(pattern,pattern_color);
       floodfill(x1+1,y1+1,boundry_color);
       setfillstyle(t.pattern,t.color);
    }


 /*************************************************************************///-------------  draw_rect(int,int,int,int,int,int,int)  ----------------///*************************************************************************/void animate_rect::draw_rect(int x1,int y1,int x2,int y2,int boundry_color,
                        int pattern,int pattern_color)
    {
       fill_rect::draw_rect(x1,y1,x2,y2,boundry_color,pattern,pattern_color);

       int size=imagesize(x1,y1,x2,y2);

       char *p;

       p=newchar[size];

       getimage(x1,y1,x2,y2,p);
       putimage(x1+100,y1+100,p,XOR_PUT);

       int x;
       int y;

       while(!kbhit())
      {
         x=random(getmaxx());
         y=y2+random(getmaxy());

         putimage(x,y,p,OR_PUT);
         delay(100);
         putimage(x,y,p,XOR_PUT);
      }
    }


 main()
    {
       clrscr();

       int graphic_driver=DETECT;
       int graphic_mode;
       int errorcode;

       initgraph(&graphic_driver,&graphic_mode,"..\\bgi");

       errorcode=graphresult();

       if(errorcode!=grOk)
      {
         restorecrtmode();
         cout<<"Graphic Error";
         exit(1);
      }

       rect x;

       x.draw_rect(20,20,150,150,4);

       fill_rect y;

       y.draw_rect(210,20,350,100,14,1,13);

       animate_rect z;

       z.draw_rect(400,20,530,100,14,7,10);

       getch();
       closegraph();
       return 0;
    }