#include <iostream>

template<class T, int i> class Vector
{
protected:
        T* m_values;                     
        unsigned m_size;
public:
        Vector()
        : m_size(i)
        {
                m_values = new T[m_size];
        }
        //Dtor
        ~Vector() { delete m_values; }

  T& at(unsigned p_pos)
  {
   return m_values[p_pos];
  }
};

template<class T> class Vector2: public Vector<T,2>
{
public:
 typedef Vector<T,2> Base;
 Vector2(T x, T y) : Base()
 {
  m_values[0] = x;
  m_values[1] = y;
 }
};

int main()
{
 Vector2<float> test(1.0f,2.0f);
 std::cout<<test.at(0)<<std::endl;
 system&#40;"Pause"&#41;;
 return 0;
}