int buzzerPin = 3;
int lightPin = 6;
int seatbeltPin = 2;
int ignitionPin = 4;

void setup() {
  pinMode(buzzerPin, OUTPUT);
  pinMode(lightPin, OUTPUT);
  pinMode(seatbeltPin, INPUT_PULLUP);
  pinMode(ignitionPin, INPUT_PULLUP);
  digitalWrite(buzzerPin, LOW);
  digitalWrite(lightPin, LOW);
}

void loop() {
  // Check if the seatbelt is fastened and ignition is off
  if (digitalRead(seatbeltPin) == LOW && digitalRead(ignitionPin) == HIGH) {
    // Wait for 20 seconds before sounding the alarm
    delay(20000);
    // Blink the light and sound the buzzer 10 times
    for (int i = 0; i < 10; i++) {
      digitalWrite(buzzerPin, HIGH);
      digitalWrite(lightPin, HIGH);
      delay(500);
      digitalWrite(buzzerPin, LOW);
      digitalWrite(lightPin, LOW);
      delay(500);
    }
    // Keep sounding the alarm and flashing the light until the seatbelt is unfastened
    while (digitalRead(seatbeltPin) == LOW) {
      digitalWrite(buzzerPin, HIGH);
      digitalWrite(lightPin, HIGH);
      delay(500);
      digitalWrite(buzzerPin, LOW);
      digitalWrite(lightPin, LOW);
      delay(500);
    }
  }
  // If the seatbelt is not fastened or the ignition is on, turn off the buzzer and light
  else {
    digitalWrite(buzzerPin, LOW);
    digitalWrite(lightPin, LOW);
  }
}