How to reuse variables from the base class to the derived class - c++

Question

I am working on a project to show statistics for a generic vehicle, then for a car and a truck.
All of the objects have a Manufacturer and Model Year, but the Car has a number of doors, and the truck has a towing capacity.
I have my vehicle class and class constructors all working properly in the code.
Now I want to call the same method of data storage from the base class Vehicle, and use it for the Car Class.
#pragma once
#include <iostream>
#include <string>
using namespace std;
class Vehicle {
private:
string manu;
int year;
public:
// Default constructor
Vehicle() {
manu = "";
year = 0;
}
// Constructor
Vehicle(string autoManu, int autoYear) {
manu = autoManu;
year = autoYear;
}
// Accessors
string getManu() const { return manu; }
int getModel() const { return year; }
void storeInfo(string autoManu, int autoYear);
void displayInfo();
};
This is my Vehicle.h file ^
#include "Vehicle.h"
void Vehicle::storeInfo(string autoManu, int autoYear) {
manu = autoManu;
year = autoYear;
}
void Vehicle::displayInfo() {
cout << "Manufacturer- " << manu << endl;
cout << "Make Year- " << year << endl;
}
This is my Vehicle.cpp file ^
These both work perfectly, now I want to use the same kind of displayInfo for the Car class.
#pragma once
#include <iostream>
#include "Vehicle.h"
#include <string>
using namespace std;
// The Car class represents a car.
class Car : public Vehicle {
private:
int doors;
public:
// Default constructor
Car() : Vehicle() { doors = 0; }
// Constructor #2
Car(string carManu, int carYear, int carDoors) : Vehicle(carManu, carYear) {
doors = carDoors;
}
// Accessor for doors attribute
int getDoors() { return doors; }
void storeInfo(string autoManu, int autoYear, int carDoors);
void displayInfo();
};
This is my Car.h file ^
#include "Car.h"
void Car::storeInfo(string autoManu, int autoYear, int carDoors) {
manu = autoManu;
year = autoYear;
doors = carDoors;
}
void Car::displayInfo() {
cout << "Manufacturer- " << manu << endl;
cout << "Make Year- " << year << endl;
cout << "Doors on the Car" << doors << endl;
}
This is the Car.cpp file.
The issue I am encountering is that the menu and year variables, the variables defined in the base class, are saying "Vehicle::manu is inaccessible"
What would be causing this, and what is the fix?
Thanks!