Dev - C++ - Ayuda en asignación de memoria

#include <iostream>

#include <new>

using namespace std;

int main ()

{

    long long int n = 0;

    long long int * p;

    while(p != 0)

    {

        p= new (nothrow) long long int[n];

        n++;

    }

    cout << endl << "-----------------------" << endl;

    cout << "size: " << n << endl;

    delete[] p;

    return 0;

}