#include <iostream>
#include <string>
#include <cstdlib>
using namespace std;

#ifndef _VECTOR_HPP_
#define _VECTOR_HPP_

class Vector {
  int *array;
  int size;
  
public:
  Vector(int length=0);
  Vector(const Vector& v);
  Vector(const Vector *v);
  ~Vector();
  int length() const;           // return Vector's length.
  int &valueAt(int pos) const;  // return a reference to element at position pos
  int find(int a) const;      // check if a exists in Vector. Return it position >0 or -1 
                              // if not element not found
  
  void print() const;           // print vector values to standard output
  void print(string &msg) const;  // print vector values to standard output
  
  /* binary operators that don't modify left operand */
  Vector operator+(const Vector& v) const;
  Vector operator-(const Vector& v) const;
  Vector operator*(Vector& v) const;
  
  /* binary operators that modify left operand */
  Vector& operator=(const Vector& v);
  Vector& operator+=(const Vector& v);
  Vector& operator+=(int a);
  Vector& operator-=(const Vector& v);
  Vector& operator-=(int a);
  Vector& operator*=(const Vector& v);
  Vector& operator*=(int a);
  Vector& operator/=(int a);
  Vector& operator%=(int a);
  Vector& operator<<=(int a);
  Vector& operator>>=(int a);
  int &operator[](int a) const;
  
};

#endif