C Program to Draw a Circle inside a Triangle

#include<stdio.h>
#include<conio.h>
#include<math.h>
#include<graphics.h>
void main()
{
  int gd=DETECT, gm, a=250, x ,y ,radius=71;
  initgraph(&gd, &gm, "C:\\TC\\BGI");
  x = getmaxx()/2;
  y = getmaxy()/2;
  outtextxy(230,70, "Circle inside a Triangle");
  circle(x, y, radius);
  moveto(194, 311);
  linerel(a,0);
  linerel(-a/2, -sqrt(3.0)/2*a);
  lineto(194, 311);
  outtextxy(210, 400, "Press any key to continue...");
  getch();
closegraph();
}

Output: