gistfile1.c

int photocellPin = 0; // the cell and 10K pulldown are connected to a0
int photocellReading; // the analog reading from the analog resistor divider

void setup(void) {
  // We'll send debugging information via the Serial monitor
  Serial.begin(9600);
}

void loop(void) {
  photocellReading = analogRead(photocellPin);
  /*Serial.print("Analog reading = ");*/
  Serial.println(photocellReading); // the raw analog reading
  // We'll have a few threshholds, qualitatively determined
/*  if (photocellReading < 10) {
    Serial.println(" - Noir");
  } else if (photocellReading < 200) {
    Serial.println(" - Sombre");
  } else if (photocellReading < 500) {
    Serial.println(" - Lumiere");
  } else if (photocellReading < 800) {
    Serial.println(" - Lumineux");
  } else {
    Serial.println(" - Tres lumineux");
  }*/
  delay(500);
}