int button = 7;
int nilaibutton;

int led = 8;

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:
  nilaibutton = digitalRead(button);

  if (nilaibutton == LOW) {
    digitalWrite(led, HIGH);
  }else{
    digitalWrite(led,LOW);
}
}