Animated Circle & ScreenSaver 25-03-2020

Write a Program to draw animation using increasing circles filled with different colors and patterns.

#include<graphics.h>  
#include<conio.h> 
#include<dos.h> 
void main()  
{
    intgd=DETECT, gm, i, x, y;
    initgraph(&gd, &gm, "..\\BGI");  
    x=getmaxx()/3;
    y=getmaxx()/3;
    setbkcolor(WHITE);
    setcolor(BLUE);
    for(i=1;i<=8;i++)  
          {
        setfillstyle(i,i);
        delay(20);
        circle(x, y, i*20);
        floodfill(x-2+i*20,y,BLUE);
    }
    getch();
    closegraph();
} 

Program to make screen saver in that display different size circles filled with different colors and at random places.

#include<stdio.h>  
#include<conio.h>  
#include<graphics.h>
#include<dos.h>  
#include<stdlib.h>  
void main()  
{
    intgd=DETECT,gm,i=0,x,xx,y,yy,r;
    //Initializes the graphics system  
    initgraph(&gd,&gm,"..\\bgi");  
    x=getmaxx();
    y=getmaxy();
    while(!kbhit())  
    {
        i++;
      //    setfillstyle(random(i),random(30));  

        circle(xx=random(x),yy=random(y),random(30));
        setfillstyle(random(i),random(30));
        floodfill(xx,yy,getmaxcolor());
        delay(200);
    }
    getch();
}