Помогите создать прогу

#include<graphics.h>
#include<conio.h>
#include<math.h>
#include<dos.h>
#define moveto(p) moveto(320+((point)p).x,240-((point)p).y)
#define lineto(p) lineto(320+((point)p).x,240-((point)p).y)

class point
{
 public:
 double x,y;
 point(double,double);
 void turn(double);
};

point::point(double _x=0,double _y=0)
{
 x=_x;
 y=_y;
}

void point::turn(double A)
{
 double _x,_y;
 _x=x*cos(A)-y*sin(A);
 _y=x*sin(A)+y*cos(A);
 x=_x;
 y=_y;
}

class triangle
{
 public:
 point P[3];
 triangle(point,point,point);
 triangle();
 void turn(double);
 void show(int);
 void hide();
};

triangle::triangle(point A,point B,point C)
{
 P[0]=A;
 P[1]=B;
 P[2]=C;
}

triangle::triangle()
{
 P[0]=point();
 P[1]=point();
 P[2]=point();
}

void triangle::turn(double A)
{
 int i=3;
 while(i--)P.turn(A);
}

void triangle::show(int c)
{
 int i=3;
 setcolor(c);
 moveto(P[0]);
 while(i--)lineto(P);
}

void triangle::hide()
{
 show(0);
}

void main()
{
 int gdriver=DETECT,gmode;
 initgraph(&gdriver,&gmode,"");
 triangle *T = new triangle(point(cos(-M_PI/6.0)*100,sin(-M_PI/6.0)*100),
                point(0.0,100.0),
                point(-cos(-M_PI/6.0)*100,sin(-M_PI/6.0)*100));
 while(!kbhit())
 {
  T->show(RED);
  delay(100);
  T->hide();
  T->turn(M_PI/180.0);
 }
 getch();
 delete T;
 closegraph();
}