void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
int bilangan = 4;

if (bilangan % 4 == 0) {
    Serial.println("Bilangan genap");
  } else {
    Serial.print("Bilangan ganjil");
  }

}

void loop() {
  // put your main code here, to run repeatedly:

}