help with arraylist

[moramoga]

I need to make an arrayList in my main, the user gives the size, and I am inserting airplane objects, but the compiler keeps throwing me an exception: no appropriate default constructor available

Here is my code:

Airplane* myAirplanes= NULL;

cout << "Size of the arraylist: " << endl;
cin >> cant;
cant = cant-1;
exception-----> aviones = new Avion[cant];

[redhead]

What is Avion? A struct? A class? Your mothers birthdaypressent ?
The compiler claims to be in need of a constructor for the class, and since you didn't show what it is, I'm assuming you need just that ie:

class Avion{
  private:
    // something hush hush
  public:
    Avion(void) {};   // this is a default constructor for class Avion
                      // Usualy called when using new()
    ~Avion(void) {};  // this is a default destructor for class Avion
                      // Usualy called when using delete()
    ...
};

I belive the default constructor/destructor is described in just about any C++ book describing how to use classes.
But since you didn't provide more than a few lines of code, I could be telling you something which you allready know and are using, and as a result this is just pissing you of.

[moramoga]

That solved my first exception, now I have another one when I do this:

actualAirplane= new Airplane();
(arrayList--->)airplanes[0] = actualAirplane;

no operator defined which takes a right-hand operand of type 'class Avion *' (or there is no acceptable conversion)

(By the way avion means airplane in spanish)

[redhead]

Your class needs an assignment operator ie = it can be accomplished like so:

class Avion{
  private: 
    std::string name;
    int number;
    std::vector <double> some_vector;
...
  public:
    Avion operator=(Avion a){
      name = a.name;
      number = a.number;
      some_vector = a.some_vector;
      return *this;
    };
...
}

Or however it will fit to reassign every member from your class to the current class instance..