Understanding the ambiguating new declaration of function error - c++

Question

I don't understand this error
here is a link to view the code online:
https://onlinegdb.com/rkirYvU_M
I am trying to add the names of the drivers, owners, and model to vectors, and we need to use pointers and files.
Here is my main file:
#include "person.h"
#include "car.h"
#include <iostream>
#include <vector>
std::vector <Person*>people;
std::vector <Car*> cars;
int main()
{
bool done = false;
Person person;
while(! done)
{
std::cout << "\n Please enter the owners ";
Person*prompt_info();
std::cout << "\n Please enter the drivers ";
Car*prompt_info();
Car*set();
Car*print();
}
return 0;
}
Here is the person.h file:
#ifndef PERSON_H
#define PERSON_H
#include <string>
#include <iostream>
//using namespace std;
class Person
{
public:
Person();
std::string get_name();
int get_age();
void prompt_info();
private:
std::string name;
int age;
};
#endif
Here is the person.c++ file:
#include "person.h"
Person::Person()
{
}
void Person::prompt_info()
{
std::cout << " name: ";
std::cin >> name;
std::cout << "enter their age: ";
std::cin >> age;
}
std::string Person::get_name()
{
return name;
}
int Person::get_age()
{
return age;
}
Here is the car.h file:
#ifndef CAR_H
#define CAR_H
#include <string>
#include <iostream>
#include "person.h"
using namespace std;
class Car
{
public:
Car();
std::string get_model();
Person* get_owner();
Person* get_driver();
void print();
void set(Person _owner,Person get_driver);
void prompt_info();
private:
std::string model;
Person* owner;
Person* driver;
};
#endif

Answer 1

I am trying to understand this error.
main.cpp:23:25: error: ambiguating new declaration of 'Car* prompt_info()'
Car*prompt_info();
^
You seem to be confusing function declarations with member functions. Just declare a Person object on the stack and call the method through it's object. Do the same for your Car object. You can use your objects like this.
while(! done)
{
Person person; ///< Person object named 'person'
Car car; ///< Car object named 'car'
std::cout << "\n Please enter the owners ";
person.prompt_info();
std::cout << "\n Please enter the drivers ";
car.prompt_info();
car.set();
car.print();
// TODO do something with your objects (store to vector?)
// next time through the loop your person and car will
// get initialized all over again
}
return 0;
You will have to store your temporary objects before they go out of scope if you want to use them later.