//Flash screen with increasing circles
#include<stdio.h>
#include<graphics.h>
#include<dos.h>
#include<conio.h>
void main()
{
	int i,gd=DETECT,gm,x,y,rad=1;
	initgraph(&gd,&gm,"c:\\turboc3\\bgi");
	x=getmaxx()/2;
	y=getmaxy()/2;
	//setbkcolor(4);
	for(i=1;i<=11;i++)
	{
		setfillstyle(i,i);
		rad=20*i;
		circle(x,y,rad);
		floodfill(x+(rad-x2),y,getmaxcolor());
		sound(200);
		delay(100);
		nosound();
		delay(100);
	}
	getch();
}