void setup() {
  // put your setup code here, to run once:
  pinMode(2, OUTPUT);
  pinMode(13, INPUT_PULLUP);
  Serial.begin(115200);
}

void Cek(int status) {
  if(status == 0) {
    Serial.println("MATI");
  } else {
    Serial.println("NYALA");
  }
}

void loop() {
  // put your main code here, to run repeatedly:
  int status = digitalRead(13);
  if(status == HIGH) {
    digitalWrite(2, HIGH);
    Serial.print("SWITCH AKTIF! Status : ");
    Cek(status);
  } else {
    digitalWrite(2, LOW);
    Serial.print("SWITCH NONAKTIF! Status : ");
    Cek(status);
  }
}