Instantiating an existing class within a new class

Projects Programming
21

No, that is not very complex at all but the syntax of a strongly typed language like c++ is quite different from the "sloppy web languages". I feel the same whenever I have to code something in JS...

Here a quick snippet showing how that works in principle. Hope that helps

#include "Arduino.h"

class Motor
{
  public:
    Motor(int _pin)
    {
       pin = _pin; 
    }

    int showPin()
    {
      Serial.print("Motor Pin: ");
      Serial.println(pin);
    }

  protected:
    int pin;
};


class Car
{
  public:
    Car(int pin1, int pin2, int pin3)
    : m1(pin1), m2(pin2), m3(pin3)
    { }

    int showPins()
    {
      m1.showPin();
      m2.showPin();
      m3.showPin();
    }

  protected:
    Motor m1, m2, m3;    
};

void setup()
{
  constexpr int pin1 = 3, pin2 = 5, pin3 = 6;

  Car myA(pin1, pin2, pin3);
  myA.showPins();
}

void loop()
{  
}