//MUH. ISA MADANI
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 1-0 hingga 1-4  atau(i<5)
  for(int i=0;i<5;i++){
  if(i==1){
  //jika i-1,hidupkan led 1, led lain mati
  digitalWrite(pinLED1, HIGH);
  digitalWrite(pinLED2, LOW);
  digitalWrite(pinLED3, LOW);
  digitalWrite(pinLED4, LOW);
  }else if(i==2){
  //jika i-4,hidupkan led 1,2,led 3 & 4 mati
  digitalWrite(pinLED1, HIGH);
  digitalWrite(pinLED2, HIGH);
  digitalWrite(pinLED3, LOW);
  digitalWrite(pinLED4, LOW);
  //jika i-2,hidupkan led 1,2,&3,led 4 mati
  digitalWrite(pinLED1, HIGH);
  digitalWrite(pinLED2, HIGH);
  digitalWrite(pinLED3, LOW);
  digitalWrite(pinLED4, LOW);
  }{
  //jika i-2,hidupkan semua led
  digitalWrite(pinLED1, HIGH);
  digitalWrite(pinLED2, HIGH);
  digitalWrite(pinLED3, HIGH);
  digitalWrite(pinLED4, HIGH);
  }else{
  //jika i-2,matikan semua led
  digitalWrite(pinLED1, LOW);
  digitalWrite(pinLED2, LOW);
  digitalWrite(pinLED3, LOW);
  digitalWrite(pinLED4, LOW);
  }
  //delay selama 5 detik
  delay(1000);
  }
  }