#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <graphics.h>
float t[3][3];
void scale(float sx,float sy) {
  t[0][0]=sx; t[1][1]=sy; t[2][2]=1;
  t[0][1]=t[1][0]=t[0][2]=t[1][2]=t[2][0]=t[2][1]=0;
}
void tran_point(int oldx,int oldy,int *newx, int *newy) {
  *newx=(int)(t[2][0]+t[0][0]*oldx+t[1][0]*oldy);
  *newy=(int)(t[2][1]+t[0][1]*oldx+t[1][1]*oldy);
}
void main() {
int    GraphDriver;             /* The Graphics device driver           */
int    GraphMode;               /* The Graphics mode value              */
struct point { int x,y; } p1,p4;
int radius;
float sx,sy,x,y,rad=3.14159/180,i,t;

  printf("give me the circle point--->"); scanf("%d %d",&p1.x,&p1.y);
  printf("give me the radius --->"); scanf("%d",&radius);
  printf("give me the scale (sx,sy)-->"); scanf("%f %f",&sx,&sy);
  getche();

  GraphDriver = DETECT;                 /* Request auto-detection       */
  initgraph( &GraphDriver, &GraphMode, "" ); /* just increasing p1 - p2 */
  setcolor(YELLOW);

  ellipse(p1.x,p1.y,0,360,radius,radius); getche();

  setcolor(CYAN); scale(sx,sy);

  ellipse(p1.x,p1.y,0,360,radius*sx,radius*sy);

  getche(); closegraph();   /* Return the system to text mode       */
}