Bouncing Ball

#include<graphics.h>
#include<conio.h>
#include<stdlib.h>
#include<iostream.h>
#include<dos.h>
void main()
{
int gd=DETECT,gm;
initgraph(&gd,&gm,"C:\\turboc++\disk\\turboc3\\bgi");
setbkcolor(11);
setcolor(WHITE);
int x=145,y=300,xd=1,yd=1;
while(!kbhit())
{
cleardevice();
outtextxy(50,50,"Bouncing Ball");
if(x<50 || x>570)
xd=-xd;
if(y<50 || y>455)
yd=-yd;
x=x+xd;
y=y+yd;
circle(x,y,20);
setfillstyle(1,5);
floodfill(x,y,15);
delay(10);
}

getch();
}