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

int status = 0;

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