const int buttonPin = 3;
const int LED = 8;
int buttonState = 0;

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

void loop() {
  // put your main code here, to run repeatedly:
  buttonState = digitalRead(buttonPin);
  if (buttonState == LOW) {
    digitalWrite(LED, HIGH);
  } else {
    digitalWrite(LED, LOW);
  }
}