const int led=5;
const int tombol=2;

boolean hasilBaca;
void setup() {
  // put your setup code here, to run once:
pinMode(led,OUTPUT);
pinMode(tombol, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
hasilBaca=digitalRead(tombol);
if(hasilBaca==0){
  digitalWrite(led, HIGH);
  delay(100);
}else {
  digitalWrite(led, LOW);
  delay(100);
}

}