error: no matching function for call to 'Auto::Auto()'

I have created 3 classes: Auto (means "car"), Klant (means "customer") and AutoVerhuur (means "car dealership).

In my main(), I have created Auto and Klant objects, and am trying to create an AutoVerhuur object.

In this last class, I basically want to reference to a specifc Klant and Auto (which customer rented which car). But, when I try that, I get an error:

> error: no matching function for call to 'Auto::Auto()'

How do I correctly reference other objects in my object?

Here is my code, if you want to take a look:

#include <iostream>

using namespace std;

class Auto{
    private:
    string type;
    double prijs_per_dag;

    public:
    Auto(string type, double prijs_per_dag){
        this->type = type;
        this->prijs_per_dag = prijs_per_dag;
    }

    void set_prijs_per_dag(double percentage){
        this->prijs_per_dag = percentage;
    }

    double get_prijs_per_dag(){
        return prijs_per_dag;
    }
};

class Klant{
    private:
    string naam;
    double korting_percentage;

    public:
    Klant(string naam):
        naam(naam){}
    

    void set_korting(double percentage){
        this->korting_percentage = percentage;
    }

    double get_korting(){
        return this->korting_percentage;
    }

    string get_name(){
        return naam;
    }

    void set_name(string naam){
        this->naam = naam;
    }
};

class AutoHuur{
    private:
    int aantal_dagen;
    Auto wagen;
    Klant huur;

    public:
    AutoHuur(Auto car, Klant huurder, int dagen){
        wagen = car;
        huur = huurder;
        aantal_dagen = dagen;
    }
};

int main(){
    Klant k("Mijnheer de Vries");
    k.set_korting(10.0);

    Auto a1("Peugeot 207", 50);
    
    AutoHuur ah1(a1, k, 4);    
}

Your Auto class does not have a default constructor defined, but your AutoHuur class has an Auto wagen; data member which the compiler is trying to default-construct (because you haven't told it otherwise), hence the error.

So, you need to either:

• give the Auto class a default constructor, eg:

  Auto(){
      this->type = "";
      this->prijs_per_dag = 0;
      // or whatever default values make sense for your needs...
  }
  

• Otherwise, change the constructor of the AutoHuur class to use its member initialization list to construct the wagen member using the desired Auto constructor (you should do the same for the other data members, too), eg:

  AutoHuur(Auto car, Klant huurder, int dagen)
      : wagen(car), huur(huurder), aantal_dagen(dagen)
  {
  }