In this c programming is related to graphics programming when you will run this program in you own mechine do not forget to set the path. of you don't the program will not work.

#include<stdio.h>
#include<conio.h>
#include<graphics.h>
#define GPATH "C:\\TC\\BGI"
void mp(int, int, int);
void cpp(int, int, int, int);
void main()
{
int x, yc, r;
int gd=DETECT, gm;
x=0;
initgraph(&gd, &gm, GPATH);
printf("\nEnter radius:\n");
scanf("%d", &r);
printf("\nEnter Y center:\n");
scanf("%d", &yc);
while(!kbhit() && x<getmaxx())
{
mp(r, x, yc);
x=x+1;
delay(50);
cleardevice();
}
getch();
}
void mp(int r, int xc, int yc)
{
int x, y, p;
x=0;
y=r;
p=1-r;
cpp(xc, yc, x, y);
while(x<=y)
{
x++;
if(p<0)
p+=2*(x-1);
else
{
p+=2*(x-y)+1;
y--;
}
cpp(xc, yc, x, y);
}
}
void cpp(int xc, int yc, int x, int y)
{
putpixel(xc+x, yc+y, WHITE);
putpixel(xc+y, yc+x, WHITE);
putpixel(xc-x, yc+y, WHITE);
putpixel(xc+y, yc-x, WHITE);
putpixel(xc+x, yc-y, WHITE);
putpixel(xc-y, yc+x, WHITE);
putpixel(xc-x, yc-y, WHITE);
putpixel(xc-y, yc-x, WHITE);
}

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