// For exercise.
// Inspired from page 851 of "The C++ Programming Language", 3ed version.
// Can Inner see an instance variable in Outer?  By just looking into the outer scope. 
// The answer is no.  The variable must be static for this to be succesful.

#include <iostream>
#include <string>

class Outer{
private:
  int private_i;

public:
  int public_i;

  class Inner{
  public:
    void fi(Outer *p);
  };

};

void Outer::Inner::fi(Outer *p){
  int local1 = private_i * 2;          //  error: invalid use of nonstatic data member  Outer::private_i
  int local2 = public_i * 3;           //  error: invalid use of nonstatic data member  Outer::public_i

  std::cout << local1 << ", " << local2 << std::endl; 
}


int main(){
  Outer o;  
  Outer::Inner i;

  i.fi(&o);
}