const int pinLED1 = 8;
const int pinLED2 = 9;
const int pinLED3 = 10;
const int pinLED4 = 11;

void setup() {
  //pin LED sebagai OUTPUT
  pinMode(pinLED1, OUTPUT);
  pinMode(pinLED2, OUTPUT);
  pinMode(pinLED3, OUTPUT);
  pinMode(pinLED4, OUTPUT);
}

void loop() {
  //perulangan sebanyak 5 kali
  //dari i=0 hinga i=4 atau (i < 5)
  for(int i=0; i<5; i++){
    if(i==1){
      //jika i=1, hidupkan led 1, led yang lain mati 
      digitalWrite(pinLED1, HIGH);
      digitalWrite(pinLED2, LOW);
      digitalWrite(pinLED3, LOW);
      digitalWrite(pinLED4, LOW);
    }else if(i==2){
      //jika i=2, hidupkan led 1 & 2, led 3 & 4 mati
      digitalWrite(pinLED1, HIGH);
      digitalWrite(pinLED2, HIGH);
      digitalWrite(pinLED3, LOW);
      digitalWrite(pinLED4, LOW);
    }else if(i==3){
      //jika i=2, hidupkan led 1, 2 & 3, led 4 mati
      digitalWrite(pinLED1, HIGH);
      digitalWrite(pinLED2, HIGH);
      digitalWrite(pinLED3, HIGH);
      digitalWrite(pinLED4, LOW);
    }else if(i==4){
      //jika i=2, hidupkan semua led
      digitalWrite(pinLED1, HIGH);
      digitalWrite(pinLED2, HIGH);
      digitalWrite(pinLED3, HIGH);
      digitalWrite(pinLED4, HIGH);
    }else{
      //jika tidak, matikan semua led 
      digitalWrite(pinLED1, LOW);
      digitalWrite(pinLED2, LOW);
      digitalWrite(pinLED3, LOW);
      digitalWrite(pinLED4, LOW);
    }
    //delay selama 5 detik 
    delay(1000);
  }
}
  // put your setup code here, to run once: