#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <graphics.h>
void linetheta(float ang, int l, float *x, float *y) {
  float rad=3.14159/180,k1,k2;
  k1=l*cos(rad*ang); k2=l*sin(rad*ang); *x+=k1; *y+=k2;
  lineto(*x,*y);
}
void main() {
int    GraphDriver;             /* The Graphics device driver           */
int    GraphMode;               /* The Graphics mode value              */
struct point { int x,y; } p1,pp[40];
int rr,c;
float d,x,y,ang,n;

  printf("give me the fixed point--->"); scanf("%d %d",&p1.x,&p1.y);
  printf("give me the length -->"); scanf("%d",&rr);
  printf("give me the step -->"); scanf("%f",&n);
  printf("give me the angle -->"); scanf("%f",&ang);

  GraphDriver = DETECT;                 /* Request auto-detection       */
  initgraph( &GraphDriver, &GraphMode, "" ); /* just increasing p1 - p2 */
  d=0.0; c=1; setcolor(c); x=p1.x; y=p1.y; moveto(x,y);
  while (rr > 10.0) {
   linetheta(d,rr,&x,&y); d=fmod(ang+d,360); rr-=n; c=(c++)%16; setcolor(c);
  }
  getche(); closegraph();   /* Return the system to text mode       */
}