const int led1=2;
const int led2=3;
const int led3=4;
const int numLEDs=3;
const int ledPins[]={2,3,4};

void setup() {
  // put your setup code here, to run once:
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
pinMode(led3, OUTPUT);
Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
nyalakanlampu();

delay(2000);

matikanlampu();

delay(2000);

runningLampu();

delay(2000);
}


void nyalakanlampu(){
  digitalWrite(led1, HIGH);
  digitalWrite(led2, HIGH);
  digitalWrite(led3, HIGH);
  Serial.println("Lampu Dinyalakan.");
}

void matikanlampu(){
  digitalWrite(led1, LOW);
  digitalWrite(led2, LOW);
  digitalWrite(led3, LOW);
  Serial.println("Lampu Dimatikan.");
}

void runningLampu(){
  for (int i=0; i < numLEDs; i++){
  digitalWrite(ledPins[i], HIGH); // Nyalakan LED saat ini
  delay(1000); // Tunggu sebentar
  digitalWrite(ledPins[i], LOW); // Matikan LED saat ini
  }





}