int led_merah=13;
int tombol=10;
int led_kuning=6;
int tombol2=4;
  void setup() {
    pinMode(led_merah, OUTPUT); 
    pinMode(tombol, INPUT);
    pinMode(led_kuning, OUTPUT);
    pinMode(tombol2, INPUT);
       digitalWrite(tombol, HIGH);
       digitalWrite(tombol2, HIGH);

  }
  void loop() {
   if(digitalRead(tombol) == LOW){
    digitalWrite(led_merah, HIGH);
    digitalWrite(led_kuning, LOW);
  }
  if(digitalRead(tombol2)==LOW){
   digitalWrite(led_kuning, HIGH);
   digitalWrite(led_merah, LOW);
   }
   }