ARBORI

#include <graphics.h>
#include <iostream>
#include <stdlib.h>
#include <conio.h>
#include <math.h>
int gdriver,gmode,ls,L;

using namespace std;

void init()
{
    gdriver = DETECT;
    initgraph(&gdriver,&gmode,"E:\\BORLANDC\\BGI");
    if (graphresult())
    {
        cout<<"Tentativa nereusita.";
        cout<<"Apasa o tasta pentru a inchide...";
        getch();
        exit(1);
    }
}
void rotplan(int xc, int yc, int x1, int y1, int &x, int &y, float unghi)
{
    x=ceil(xc+(x1-xc)*cos(unghi)-(y1-yc)*sin(unghi));
    y=ceil(yc+(x1-xc)*sin(unghi)+(y1-yc)*cos(unghi));
}
void desenez(int x1,int y1,int x2,int y2,int n,int ls)
{
    int x,y;
    if (n<=ls)
    {
        setcolor(YELLOW);
        moveto(x1,y1);
        lineto(x2,y2);
        rotplan(x2,y2,div(3*x2-x1,2).quot,div(3*y2-y1,2).quot,x,y,M_PI/4);
        desenez(x2,y2,x,y,n+1,ls);
        rotplan(x2,y2,div(3*x2-x1,2).quot,div(3*y2-y1,2).quot,x,y,-M_PI/4);
        desenez(x2,y2,x,y,n+1,ls);
 }
}
main()
{
    cout<<"ls= "; cin>>ls;
    init();
    setcolor(6);
    desenez(div(getmaxx(),2).quot,getmaxy(),
    div(getmaxx(),2).quot,getmaxy()-250,1,ls);
    getch();
    closegraph();

}