#include <Arduino.h>

class ExampleClass {
private:
  int privateVariable;

public:
  ExampleClass(int value) {
    value = value + 3;
    privateVariable = value;
  }

  int getPrivateVariable() {
    return privateVariable;
  }
};

ExampleClass example(42);

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

void loop() {
  int value = example.getPrivateVariable();
  Serial.println(value);

  delay(1000);
}