const int buttonPin = 3;
int buttonState = 0;
void setup()
{
  Serial.begin(9600);
  pinMode(buttonPin, INPUT_PULLUP);

}

void loop()
{

  buttonState = digitalRead(buttonPin);
  if (buttonState == HIGH) {
  Serial.print(1);
  delay(1000);
  }

  else{
  
  Serial.print(0);
  delay(1000);
  }
}