const int buttonPin = A0;
const int buzzerPin = 12;

int buttonState = 0;

void setup() {
  pinMode(buttonPin, INPUT);
  pinMode(buzzerPin, OUTPUT);
}

void loop() {
  if (buttonState == LOW) {
    digitalWrite(digitalRead(buttonPin), LOW);
  } else {
    digitalWrite(buzzerPin, HIGH);
  }

  delay(50);
}