void setup() {
  // put your setup code here, to run once:
  pinMode(2, INPUT);
  pinMode(3, INPUT);

  Serial.begin(9600);
  Serial.println();
}

void loop() {
  Serial.print("LDR 1: ");
  Serial.print(digitalRead(2));
  Serial.print(", LDR 2: ");
  Serial.println(digitalRead(3));
  delay(100);
}