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

int status = 0;

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

void loop() {
  // put your main code here, to run repeatedly:
if(digitalRead(tombol) == HIGH){
status++;
delay(100);
}

if (status == 1){
  digitalWrite(LED_hijau, HIGH);
  delay(100);
}
else if ( status == 2){
  digitalWrite(LED_biru, HIGH);
  delay(100);
}
else if (status == 3 ){
  digitalWrite(LED_merah, HIGH);
  delay(100);
}
else if(status == 4){
  status = 0;
  delay(100);
}
else{
  digitalWrite(LED_hijau,LOW);
  digitalWrite(LED_biru,LOW );
  digitalWrite(LED_merah,LOW );
}
 }