int lampu_led1 = 13;
int lampu_led2 = 12;
int lampu_led3 = 11;
int button1 = 2;
int button2 = 3;
int button3 = 4;

void setup() {
  // put your setup code here, to run once:
  pinMode(lampu_led1, OUTPUT);
  pinMode(lampu_led2, OUTPUT);
  pinMode(lampu_led3, OUTPUT);
  pinMode(button1, INPUT);
  pinMode(button2, INPUT);
  pinMode(button3, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  int kondisi_button1 = digitalRead(button1);
  int kondisi_button2 = digitalRead(button2);
  int kondisi_button3 = digitalRead(button3);

  if(kondisi_button1 == HIGH) {
    digitalWrite(lampu_led1, HIGH);
  } else {
    digitalWrite(lampu_led1, LOW);
  }
  
  if(kondisi_button2 == HIGH) {
    digitalWrite(lampu_led2, HIGH);
  } else {
    digitalWrite(lampu_led2, LOW);
  }
  
  if(kondisi_button3 == HIGH) {
    digitalWrite(lampu_led3, HIGH);
  } else {
    digitalWrite(lampu_led3, LOW);
  }
}