strom

struct uzel
{
    int cislo;
    uzel *pravy;
    uzel *levy;
};
class strom
{
public:
    strom();
    ~strom();
    void add(int);  //obalka
    void neco(int);
private:
    void insert(uzel *&koren,int c);
    void smazani(uzel * koren);
    uzel * root;
};
strom::strom()
{
    root=NULL;
}
strom::~strom()
{
    smazani(root);
}
void strom::add(int c)
{
    insert(root,c);
}
void strom::insert(uzel *&koren,int c)
{
    if(koren==NULL) //ukoncovaci podminka rekurze
    {
        koren=new uzel;
        koren->cislo=c;
        koren->pravy=NULL;
        koren->levy=NULL;
    }
    if(c > koren->cislo)//koren 10
    {
        insert(koren->pravy,c);
        return;
    }
    else
    {
        insert(koren->levy,c);
        return;
    }

}
void strom::smazani(uzel *koren)
{
    if(koren!=NULL)
    {
        smazani(koren->levy);
        smazani(koren->pravy);
        delete koren;
    }
}
void strom::neco(int c) //10
{
    root=new uzel;
    root->cislo=c;
    root->levy=NULL;
    root->pravy=NULL;
    cout<<root->levy->levy->pravy->cislo
}
int main()
{
    strom tree;
    tree.add(15);
    tree.add(20);



}