Draw a Bouncing Ball on Surface using C++ Graphics

Simple C++ graphics program that draws a Bouncing Ball over a Plain Surface. This program uses simple <graphics.h> functions to draw the ball. In this program , cos function is used to bounce the ball.  setfillstyle and floodfill functions are used to fill the ball.

Source Code

#include<dos.h>
#include<iostream.h>
#include<graphics.h>
#include<math.h>
#include<conio.h>
void main()
 {

   int d=DETECT,m;
   initgraph(&d,&m,"e:\tcc\bgi");
   float x=1,y=0.00000,j=.5,count=.1;
   float r=15;
   setcolor(14);
   line(0,215,650,215);
    sleep(1);
    for(int k=0;k<=7;k++)
     {

      for(float i=90;i<270;i+=10)
       {
 y=cos(((i*22/7)/180))/j;

 if(y>0)
 y=-y;
 x+=5;

 setcolor(14);
 setfillstyle(1,14);
 circle(x,y*100+200,r);
 floodfill(x,y*100+200,14);

       delay(100);

 setcolor(0);
 setfillstyle(1,0);
 circle(x,y*100+200,r);
 floodfill(x,y*100+200,0);

       }

      j+=count;
      count+=.1;

     }
   getch();
 }  

Output

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