Struct and pointers

#include <iostream>
using namespace std;

struct player {
    int level;
};

void * prova_param(void * the_param)
{
    return the_param;
}

int main()
{
    player p;
    player * r_pointer;

    // Over 9000!
    p.level = 9001;

    r_pointer = (player*) prova_param((void *) &p);
    cout << r_pointer->level << endl;

    p.level = 9002;
    cout << r_pointer->level << endl;

    return 0;
}