int ledBiru = 19;
int ledMerah = 18;
int ledKuning = 5;
int button = 15;
int buttonKlik = 0;

void setup() {
  // put your setup code here, to run once:  
  Serial.begin(9600);
  pinMode(ledBiru, OUTPUT);
  pinMode(ledMerah, OUTPUT);
  pinMode(ledKuning, OUTPUT);
  pinMode(button, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  if(digitalRead(button) == HIGH){
    buttonKlik++;
    delay(200);    
    lampuNyala(buttonKlik);
    delay(200);
  } 
  lampuMati(buttonKlik);
  if(buttonKlik >= 3){
    buttonKlik = 0;
  }
  Serial.println(buttonKlik);
  delay(10); // this speeds up the simulation
}

void lampuNyala(int count){
  if(count == 1){
    digitalWrite(ledBiru, HIGH);
  }else if(count == 2){
    digitalWrite(ledMerah, HIGH);
  }else{
    digitalWrite(ledKuning, HIGH);
  } 
}

void lampuMati(int count){
  if(count == 1){
    digitalWrite(ledBiru, LOW);
  }else if(count == 2){
    digitalWrite(ledMerah, LOW);
  }else{
    digitalWrite(ledKuning, LOW);
  } 
}