int buttonPin = 2;  // Pin for push
int buzzerPin = 4;  // Pin for buzzer
bool buzzerOn = false;    // Track buzzer state

void setup() {
  pinMode(buttonPin, INPUT_PULLUP); // Input with internal pull-up
  pinMode(buzzerPin, OUTPUT);        // Set pin for buzzer
}

void loop() {
  int lastButtonState = HIGH;  // Store the last button state
  int buttonState = digitalRead(buttonPin); // Read current state

  // Check for button press (LOW state)
  if (buttonState == LOW && lastButtonState == HIGH) {
    buzzerOn = !buzzerOn; // Toggle buzzer state
    if (buzzerOn) {
      tone(buzzerPin, 600); // Turn on buzzer
    } else {
      noTone(buzzerPin);     // Turn off buzzer
    }
    delay(250); // Debounce delay
  }

  lastButtonState = buttonState; // Update last button state
}