do i need to overload the = operator?

Question

first of all, I'm just experimenting...

I have a pointer, pointing to a private vector member

std::vector< double > *vPtr = &vec_;

void setVec(double &s,double &t,double &u,double &v) {
vPtr[0] = s;
vPtr[1] = t;
vPtr[2] = u;
vPtr[3] = v;
};

Answer 1

or would it be better to say

class_type *cPtr = NULL;

"...
private:

std::vector<other_class_type> vec_;
..."

Answer 2

any way you do it. its not a problem.

the 1st one is what most people do in the industry

Answer 3

I wouldn't worry about memory allocation for vectors,its automatic..Your compiler will throw a couple errors......