#include "LiquidCrystal_I2C.h"

#define LDR_PIN 2

LiquidCrystal_I2C lcd(0x27, 20, 4);

void setup() {
  // put your setup code here, to run once:
 pinMode(LDR_PIN,INPUT);
 lcd.init();
 lcd.backlight();
}

void loop() {
  // put your main code here, to run repeatedly:
  lcd.setCursor(2,0);
  lcd.print("Room: ");
  if(digitalRead(LDR_PIN)==LOW){
    lcd.print("Light!");
  }
  else{
    lcd.print("Dark!");
  }
  delay(100);
  
}