#include <iostream>

struct Foo {
  int n;

  Foo(int nn) {
    n = nn;
  }
};

int main() {
  Foo const *pfoo = new Foo(0);

  std::cout << pfoo->n << std::endl;

  Foo *ppfoo = (Foo*)pfoo;

  ppfoo->n = 1;

  std::cout << ppfoo->n << std::endl;
}