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#include 
   
    #include 
    
     #include 
     
      #include 
      
       #include 
       
        #define a 60#define PI 3.1415926double th=PI/180;void StartPic(void){   	//int gr=DETECTgm;	//initgraph(&gr,&gm,"e://turboc2");	initgraph(800,600);	cleardevice();}void ClosePic(void){   	getch();}void DrawXin(int x0,int y0,int k){   	double i,x,y,tx,ty;	for(i=-180.0;i<180.0;i+=0.01)	{   		x = a*(2*cos(i*th)-cos(2*i*th));		y = a*(2*sin(i*th)-sin(2*i*th));		tx = x;		ty = y;		x = tx*cos(k*th)-ty*sin(k*th)+x0;		y = y0-(ty*cos(k*th)+tx*sin(k*th));		putpixel(x,y,RED);		setfillstyle(1,RED);		floodfill(500,500,RED);	}}void main(void){   	StartPic();	DrawXin(320,240,90);	setfillcolor(RGB(255,0,0));	floodfill(350,250,RGB(255,255,0));	ClosePic();}
       
      
     
    
   

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