#include <Servo.h>

Servo servoku;  
int Pinled[] = {13, 12, 11};  
int Totalled = 3; 

void setup() {
  servoku.attach(9);  
  for (int i = 0; i < Totalled; i++) {
    pinMode(Pinled[i], OUTPUT);  
  }
}

void loop() {
  Derajatservo(0, -1);   
  delay(1000);      
  Derajatservo(60, 0);  
  delay(1000);      
  Derajatservo(120, 1);  
  delay(1000);       
  Derajatservo(180, 2);  
  delay(1000);      
}

void Derajatservo(int Derajat, int ledIndex) {
  servoku.write(Derajat); 
  for (int i = 0; i < Totalled; i++) {
    digitalWrite(Pinled[i], LOW); }
  if (ledIndex != -1) {
    digitalWrite(Pinled[ledIndex], HIGH); }
}