#include <LiquidCrystal_I2C.h>

#define I2C_ADDR 0x27
#define LCD_COLUMNS 20
#define LCD_LINES 2

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

// Define the pin for the LED
#define LED_PIN 5
// Define the pin for the button
#define BUTTON_PIN 6
#define BUZZER_PIN 8

void setup() {
  lcd.init();
  lcd.backlight();

  // Set the LED pin as an output
  pinMode(LED_PIN, OUTPUT);
  // Set the button pin as an input
  pinMode(BUTTON_PIN, INPUT);
  pinMode(BUZZER_PIN, OUTPUT);

  // This part will show and write all the output processed by Arduino
  lcd.setCursor(4, 0);
  lcd.print("Welcome");
  lcd.setCursor(2, 1);
  lcd.print("Quiz Alarm");

  delay(4000);
  lcd.clear();
}

void tetot() {
  tone(BUZZER_PIN, 300);
  delay(300);
  tone(BUZZER_PIN, 200);
  delay(500);
  noTone(BUZZER_PIN);
}

void loop() {
  // Read the state of the button
  int buttonState = digitalRead(BUTTON_PIN);

  // Set cursor to the first line
  lcd.setCursor(0, 0);
  lcd.print("Status: ");
  
  if (buttonState == LOW) { 
    digitalWrite(LED_PIN, LOW);
    lcd.print("OFF ");
    noTone(BUZZER_PIN);

  } else { // Button is not pressed
    tetot();
    digitalWrite(LED_PIN, HIGH);
    lcd.print("ON ");
    delay(300);
  }
  
}