int led = 10 ;
int nilaitombol ;
int button = 13 ;

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

void loop() {
  // put your main code here, to run repeatedly:
  nilaitombol=digitalRead(button);

  if(nilaitombol==HIGH) {
    digitalWrite(led, HIGH);
    delay(200);
    digitalWrite(led, LOW);
    delay(200);
  } else{
    digitalWrite(led, LOW);
}
}