#define LED_hijau 13 
#define LED_biru 12 
#define LED_merah 11 
#define tombol 7

int status = 0;

void setup() {
// put your setup code here, to run once: pinMode(LED_hijau, OUTPUT);
  pinMode(LED_hijau, OUTPUT);
  pinMode(LED_biru, OUTPUT);
  pinMode(LED_merah, OUTPUT);
  pinMode(tombol, INPUT);
  digitalWrite(LED_hijau, LOW);
  digitalWrite(LED_biru, LOW);
  digitalWrite(LED_merah, LOW);
}

void loop() {
  if (digitalRead(tombol) == HIGH){
    status++; 
    delay(500);
  }

  if(status==1){
    digitalWrite(LED_hijau, HIGH);
  }
  else if (status == 2) {
    digitalWrite(LED_biru, HIGH);
  }
  else if(status == 3) {
    digitalWrite(LED_merah, HIGH);
  }
  else if(status == 4){
    status = 0;
  }
  else{
  digitalWrite(LED_hijau, LOW);
  digitalWrite(LED_biru, LOW);
  digitalWrite(LED_merah, LOW);
  }
}