int button2 = 11;
int button1 = 13;
int nilaitombol;

int led1 = 12;
int led2 = 7;

void setup() {
  
  pinMode(11, INPUT);
  pinMode(13, INPUT);
  pinMode(12, OUTPUT);
  pinMode(7, OUTPUT);
  }

  void loop() {
    // put your main code here, to run repeatedly:
    nilaitombol = digitalRead(button2);

    if (nilaitombol == HIGH) { 
      digitalWrite(led2, HIGH);
      delay(200);
      digitalWrite(led1, LOW);
      delay(200);
    } else {
      digitalWrite(led2, LOW);
      digitalWrite(led1, LOW);
    }

     nilaitombol == digitalRead(button1);

    if (nilaitombol == LOW) {
      digitalWrite(12, LOW);
      delay(200);
      digitalWrite(12, HIGH);
      delay(200);

      } else {
        digitalWrite(led2, LOW);
    }
    }