class Automobile {
  public:
    Automobile(int gaslevel, int velocity, int tanksize);
    void accelerate();
    void halt();
    void decelerate();
    void filltank();
    void consumegas();
    int checkspeed();
    int checkgas();
  private:
    int _gaslevel;
    int _velocity;
    int _tanksize;
}

// creating functions for the object... in other words object members that are METHODS
Automobile::Automobile(int gaslevel, int velocity, int tanksize) {
  _gaslevel = gaslevel;
  _velocity = velocity;
  _tanksize = tanksize;
}

Automobile::accelerate() {
  _velocity++;
}

Automobile::halt() {
  _velocity = 0;
}

Automobile::decelerate() {
  _velocity++;
}

Automobile::filltank() {
  _gaslevel = _tanksize;
}

Automobile::consumegas() {
  gaslevel--;
}

Automobile::checkspeed() {
  return _velocity;
}

Automobile::checkgas() {
  return _gaslevel;
}



void setup() {
  Serial.begin(9600);

  newcar = Automobile(100,0,100);
  oldcar = Automobile(4,45,100);

}

void loop() {

  if (random(1,4) == 1) {
    newcar.accelerate();
  }

  if (random(1,4) == 2) {
    newcar.decelerate();
  }

  newcar.consumegas();

  if (newcar.checkgas() < 1) {
    newcar.halt();
    newcar.filltank();
  }

  Serial.print(" velocity=");
  Serial.print(newcar.checkspeed());
  Serial.print(" gaslevel=");
  Serial.print(newcar.checkgas());
  Serial.println;

}