// photocell connected with PC
const int photocellPin = A0;
int photocellReading;

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

void loop(void)
{
photocellReading = analogRead(photocellPin);
Serial.print("analog reading =");
Serial.print(photocellReading);

if (photocellReading < 10) {Serial.println("-Dark");}
else if (photocellReading < 200) {Serial.println("-Dim");}
else if (photocellReading < 500) {Serial.println("-Light");}
else if (photocellReading < 800) {Serial.println("-Bright");}

else {Serial.print("-Verybright");}
delay(1000);
}