pattern Composit

#include <iostream>
#include <stack>
#include <list>
using namespace std;

class Component
{

};
class Atom:Component
{
private:
    string data;
public:
    Atom(string a):data(a)
    {

    }
};

class Complex: Component
{
private:
    list<Component> list;
    list<*Complex> temp_list;
};

Atom* Parse(string in, int p)
{
    string result = " ";
    int i = p;
    while (in[i] == '(')
    {
        temp_list = new Component();
        temp_list.Add(new Atom(result));
        Parse(in, p - 1);
    }
    while (in[i] != ',')
    {
        result += in[i];
        i++;
    }
    Atom a(result);
    Parse(in, i++);
}