#include <iostream>
using namespace std;

class IntCell
{
  public:
    explicit IntCell( int initialValue = 0 )
    {
        storedValue = new int( initialValue );
    }
    IntCell( const IntCell & rhs )
    {
        storedValue = new int( *rhs.storedValue );
    }

    ~IntCell( )
    {
        delete storedValue;
    }

    IntCell & operator=( const IntCell & rhs )
    {
        if( this != &rhs )
            *storedValue = *rhs.storedValue;
        return *this;
    }

    int getValue( ) const
    {
        return *storedValue;
    }

    void setValue( int val )
    {
        *storedValue = val;
    }

  private:
    int *storedValue;
};

int f( )
{
    IntCell a( 2 );
    IntCell b = a;
    IntCell c;

    c = b;
    a.setValue( 4 );
    cout << a.getValue( ) << endl << b.getValue( ) << endl
         << c.getValue( ) << endl;

    return 0;
}

int main( )
{
    return f( );
}