void setup()
{
  int a = 15;
  int b = 31;
  int hasil_jumlah;
  hasil_jumlah = a + b;
}

void loop()
{

}

void setup()
{
  Serial.begin(9600);
  int a = 15;
  int b = 31;
  int hasil_jumlah;
  hasil_jumlah = a + b;
  Serial.println(hasil_jumlah);
}

void loop()