// Global variables
int lightPin = A0;
int lightVal;
int ledPin9 = 9, ledPin10 = 10;


void setup() {
  // put your setup code here, to run once:
  pinMode(lightPin, INPUT);
  pinMode(ledPin9, OUTPUT);
  pinMode(ledPin10, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  lightVal = analogRead(lightPin);
  Serial.println(lightVal);
  if (lightVal >= 500) 
    {
    digitalWrite(ledPin10, HIGH);
    digitalWrite(ledPin9, LOW);
    }
  else 
    {
      digitalWrite(ledPin9, HIGH);
      digitalWrite(ledPin10, LOW);
    }
}