text: #pragma once
  
  #include "size.hh"
  #include <iostream>
  #include <cmath>
  
  class Vector {
  
  private:
  
      double size[SIZE];     //Tablica wektora
  
  public:
  
      Vector();
  
      Vector(double [SIZE]);
  
      Vector operator + (const Vector &v);
  
      Vector operator - (const Vector &v);
  
      Vector operator * (const double &tmp);
  
      Vector operator / (const double &tmp);
  
      const double &operator [] (int index) const;
  
      double &operator [] (int index);
  
      bool operator == ( const Vector &v) const;
  
      double length(const Vector &v);
  
  };
  
  std::ostream &operator << (std::ostream &out, Vector const &tmp);
  
  std::istream &operator >> (std::istream &in, Vector &tmp);
  