C++ access my vector in another headerfile and cpp - c++

Question

How would I access my vector declared in aDie.h from aHisto.h, preferably not as a function? Once my vector is in my Histo.h I want to be able to modify it, change size, and just manipulate it however I choose. I am just having troubles with error messages in VS.
aDie.h
#define aDie_H
#pragma once
#include <vector>
#include <iostream>
class aDie {
public:
aDie();
void numRolls();
void getSeed();
void roll();
void myVector(); //just gives my vector values
void Print();
std::vector<int> myV; //declare my vector, it has values stored from void myVector();
private:
int i = 0;
int Rolls;
int dSeed;
int die1;
int die2;
int sum;
};
aHisto.h
#define aHistogram_H
#include "aDie.h"
class aHistogram : public aDie{
public:
//adds a pointer to my vector so I can access and modify it anywhere on this header
aHistogram(); //default const
void getVector(); //does stuff with vector
private:
int i = 0;
int min;
int max;
};
aHisto.cpp
#include "aHistogram.h"
#include "aDie.h"
#include <iostream>
#include <vector>
using namespace std;
aHistogram::aHistogram() { //default constructor
min = 0;
max = 0;
}
void aHistogram::getVector() {
//does stuff with vector here
}

Answer 1

Use the scope resolution operator because aHistogram inherits from aDie.
or you could use this because of the inheritance access level.
void aHistogram::getVector() {
aDie::myV->something();
//Or use this pointer
this->myV->something();
}