C program to draw ellipse using trigonometric method

#include<stdio.h>
#include<conio.h>
#include<graphics.h>
void main()
{
  int gd=DETECT, gm, p1, q1, angle1, angle2, xr, yr;
  initgraph(&gd, &gm, "C:\\TC\\BGI");
  printf("Enter the centre coordinate(p1, q1):");
  scanf("%d%d", &p1, &q1);
  printf("Enter the semi-major axis:");
  scanf("%d", &xr);
  printf("Enter the semi-minor axis:");
  scanf("%d", &yr);
  angle1=0;
  angle2=360;
  setcolor(BROWN);
  ellipse(p1,q1,angle1,angle2,xr,yr);
  setfillstyle(LTBKSLASH_FILL, MAGENTA);
  floodfill(p1, q1, BROWN);
  outtextxy(20, 450, "Press any key to continue...");
  getch();
 closegraph();
}

Output: