//definition
class Vector {
   float x,y,z;
   public:
      Vector();
      Vector(float, float, float);
      Vector(const Vector&);

      Vector operator + (Vector);
      Vector operator - (Vector);
      Vector operator * (Vector);
      Vector operator / (Vector);
      Vector operator = (Vector);
      Vector operator == (Vector);
      Vector operator != (Vector);
      Vector operator () (Vector);

      float dot_product(Vector);
      Vector cross_product(Vector);
      float length();
      float normalize();
      void print_vector();
};

//two constructors used
Vector::Vector(const Vector &v)
{
   x = v.x; 
   y = v.y; 
   z = v.z;
}

Vector::Vector(float new_x, float new_y, float new_z)
{
   x = new_x; 
   y = new_y; 
   z = new_z;
}

//the operator= method
Vector Vector::operator= (Vector v)
{
   Vector t (v.x, v.y, v.z);
   t.print_vector();printf("\n");
   return (t);
}

//main i've been using
int main()
{
   Vector v (1, 2, 3);
   Vector z (1, 2, 3);
   Vector q;
   v.print_vector(); printf("\n");
   z.print_vector(); printf("\n");
   q = z + v;
   q.print_vector(); printf("\n");
}

//the output
jule@dolphy ~/classes/cs265/labs/lab1 $ ./vector 
(1.000, 2.000, 3.000) //created vector v
(1.000, 2.000, 3.000) //created vector z
(2.000, 4.000, 6.000) //in operator+ method
(2.000, 4.000, 6.000) //in operator= method
(0.000, 0.000, 0.000) //q = v + z;

Vector& Vector::operator= (const Vector& v)
{
  x = v.x;
  y = v.y;
  z = v.z;

  return *this;
}