#define lampuHijau 2
#define tombolHijau 12

void setup() {
  // put your setup code here, to run once:
  pinMode(lampuHijau, OUTPUT);
  pinMode(tombolHijau, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  int tekan = digitalRead(tombolHijau);
  if (tekan == HIGH)
  {
    digitalWrite(lampuHijau, HIGH);
  }
  else
  {
    digitalWrite(lampuHijau, LOW);
  }
}