Structure's vector

[Maximus_X]

Hi guys,
I have a structure and a vector to a structure.

struct myParams		
{
   double   angleOX;
   double   angleOY;
   double   angleOZ;
   double   trOX;
   double   trOY;
   double   trOZ;
   double   bandHeight;
};

------------
------------

std::vector<myParams> m_c_Vector;

And I use it into a code like that:

m_c_Vector.clear();
myParams s_param;
int x = 0;

do {
       x = fscanf(file_stream,"%lf\t%lf\t%lf", &s_param.angleOX, &s_param.angleOY, &s_param.angleOZ);

      m_c_Vector.push_back(s_param);
    } while (x != 0);

Finaly, I have a structure's vector with some valid values on this used members but, some members sets by default, unemployed.
As you can see in the last code section, I'm not using all the members the myParams structure (e.g. trOX, trOY, trOZ, bandHeight). At that moment, I don't need to use this structure's members, but perhaps in the future, I'll need it. I designed myStruct right on this ideea.

I'm asking if that kind of design and writing code it's better than the designing of a smaller structure with the moment necessary members?

Regards.