Arduino Hello World

unsigned int example = 65535;

void setup() {
  pinMode(LED_BUILTIN, OUTPUT);

  Serial.begin(9600);
  Serial.println("");
  Serial.print("The example unsigned int is : ");
  Serial.println(example);
  Serial.print("Size of unsigned int = ");
  Serial.println(sizeof(example));
}

void loop() {
  digitalWrite(LED_BUILTIN, HIGH);
  delay(1000);
  digitalWrite(LED_BUILTIN, LOW);
  delay(2000);

  digitalWrite(LED_BUILTIN, HIGH);
  delay(100);
  digitalWrite(LED_BUILTIN, LOW);
  delay(100);
  digitalWrite(LED_BUILTIN, HIGH);
  delay(100);
  digitalWrite(LED_BUILTIN, LOW);
  delay(100);
  digitalWrite(LED_BUILTIN, HIGH);
  delay(100);
  digitalWrite(LED_BUILTIN, LOW);
  delay(2000);
}