Beep and blink

const int ledPin =  4;// the number of the LED pin
const int buzzerPin = 3;
const int LDR_IN = A2;
const int LIGHT_THRESHOLD = 82;
// Variables will change:
int ledState = LOW;             // ledState used to set the LED

// Generally, you should use "unsigned long" for variables that hold time
// The value will quickly become too large for an int to store
unsigned long previousMillis = 0;        // will store last time LED was updated
unsigned long toneStartMillis = 0;

// constants won't change:
const unsigned long blinkInterval = 1000;           // interval at which to blink (milliseconds)
const unsigned long toneInterval = 10000;

void setup() {
  // set the digital pin as output:
  pinMode(ledPin, OUTPUT);
  digitalWrite(ledPin, ledState);
}

void loop() {
  // here is where you'd put code that needs to be running all the time.

  // check to see if it's time to blink the LED; that is, if the difference
  // between the current time and last time you blinked the LED is bigger than
  // the interval at which you want to blink the LED.
  unsigned long currentMillis = millis();
  if (currentMillis - previousMillis >= blinkInterval) {
    // save the last time you blinked the LED
    previousMillis = currentMillis;

    // if the LED is off turn it on and vice-versa:
    if (ledState == LOW) {
      ledState = HIGH;
    } else {
      ledState = LOW;
    }
    // set the LED with the ledState of the variable:
    digitalWrite(ledPin, ledState);
  }
  int brightness = analogRead(LDR_IN);
  if (brightness > LIGHT_THRESHOLD) {
    tone(buzzerPin, 440);
    toneStartMillis = currentMillis;
  }

  if ( currentMillis - toneStartMillis >= toneInterval ) {
    noTone(buzzerPin);
  }
}