temp c++

Datum.h

#ifndef DATUM_H
#define DATUM_H
#include <cstdlib>
#include <iostream>

using namespace std;

class Datum
{
    public:
        Datum();
        Datum(float);
        Datum(const Datum &);
        //~Datum();
        void setData(float);
        float getData();
    //private:
        float data;
        Datum *next;
};

#endif

Datum.cpp
#include "Datum.h"
#include <iostream>
#include <cstdlib>

using namespace std;

Datum::Datum()
{
   data = 0;
   next = NULL;
}

Datum::Datum(float input)
{
    data = input;
}

//Copy constructor issue, ask Valafar
Datum::Datum(const Datum &rhs)
{
    data = rhs.data;
}

void Datum::setData(float input)
{
    data = input;
}

float Datum::getData()
{
    cout << data;
}

main.cpp

#include "Datum.h"
#include <iostream>
using namespace std;

int main(int argc, char** argv)
{
  Datum a(1);
  Datum b(2);
  a.data = 3;
  //a.next = &b;

  cout << &a << endl;
  cout << &b << endl;

  cout << a.next << endl;
}