const int lightSensorPin = 4;

void setup() {
  Serial.begin(9600);
}

void loop() {
  
  int lightSensorReading = 0;
  lightSensorReading = analogRead(lightSensorPin);
  Serial.println(lightSensorReading);
  delay(100);
  
  if(lightSensorReading > 5){            
    Serial.print("It is dark");
  }

  else {
  Serial.print("It is light");
  }
}