const int LEDpin = 12;
const int photoPIN = A0;

void setup() {

  serial.begin(9600);
  pinMode(photoPIN,INPUT);
  pinMode(LEDpin,OUTPUT);
}
void loop() {

  int sensorStatus = analogRead(photoPIN);


  if (sensorStatus <200)
  {
    digitalWrite(LEDpin,HIGH);
    serial.println("LED is ON, status of sensor is DARK");
  }
  else
  {
    digitalWrite(LEDpin,LOW);
    serial.println("***************");
  }
}