Trees as Linked Lists

[Jeneo W.]

Hello
How do I deal with Trees as Linked Lists ??

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I think I would need for TL* son ,TL* father, TL* brother.

struct ff
{
        int id;
        ff * son;
        ff * father;
        ff * brother;
};
class formula_s
{
        public:
            ~formula_s();
            formula_s();
            void add_formula(ff *p1);
};

I used to enter data this way,

		f = new formula;
		f->id = 1;
		g = new formula;
		g->id = 11;
		f->son = g;
		g->father = f;
		p = new formula;
		p->id = 12;
		g->brother = p;
		p->father = g;
		p->brother = NULL;
		q = new formula;
		q->id = 13;
		p->son = q;
		q->father = p;
		p = new formula;
		p->id = 14;
		q->brother = p;
		p->father = q;
		p->brother = NULL;
		p = new formula;
		p->id = 15;
		g->son = p;
		p->father = g;
		p->brother = NULL;

I want to create a function >>> void add_formula(ff *p1);
so as to the user can enter data.

[Pocoya]

Unless you make an actual, mutual interaction between nodes, you won't be able to build anything on your own; No one is helping you except you

[potatoCode]

mutual interaction

What's that?

I want to create a function >>> void add_formula(ff *p1);
so as to the user can enter data.

well, you already know how to assign a pointer

#include <iostream>

namespace demo
{
std::ostream& os = std::cout;

struct formula
{
    explicit
    formula(const int i = 0)
        :
        next(0),
        previous(0),
        id(i)
    {
    }

    formula* next;
    formula* previous;
    int id;
};

struct mixer
{
    mixer()
        : pointer(0)
    {
    }

    void add_formula(formula* p)
    {
        pointer = p;
        os << "Formula id ( " << p->id << " ) added\n";
    }

    formula*  pointer;
};

} // end namespace

int main()
{
    {
        using namespace demo;

        formula f(66);
        formula f2(77);

        mixer m;
        m.add_formula(&f);
        m.add_formula(&f2);
    }
}

Or do I silently hear you having trouble with other stuff you haven't said yet?