gistfile1.cpp

#include <iostream>

class Hoge
{
public:
  Hoge() { std::cout << "Create Hoge" << std::endl; }
  virtual ~Hoge() {}
  void say() { std::cout << "Hoge" << std::endl; }
};

class Hage
{
public:
  Hage() {}
  virtual ~Hage() {}

  Hoge* x;
};

int main(int argc, char *argv[])
{
  Hage hage;

  hage.x->say();
  
  return 0;
}