// File: priv1.cpp
// 
// Non-member functions cannot access private data members.
//

#include <iostream>

using namespace std;

class foo {
    public:
       int pub_data ;
    private:
       int priv_data ;
} ;


int main() {
   foo obj ;

   obj.pub_data = 17 ;
   obj.priv_data = 19 ;
}