Bouncing Ball using C / C++

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PROGRAM 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,"C:\\TC\\BGI");
float x=1,y,j=0.5,count=0.1,i;
setcolor(01);
for(int k=0;k<7;k++)
{
for(i=90;i<270;i+=10)
{
y=cos(i*3.14/180)/j;
if(y>0)
y=-y;
x+=5;
setfillstyle(1,01);
circle(x,y*100+200,15);
floodfill(x,y*100+200,01);
line(0,215,800,215);
delay(50);
clrscr();
}
j+=count;
count+=0.1;
}
getch();

 }

 OUTPUT:


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