How to read the value of a photoresistor and print it out in serial monitor

[babynisse]

@gcjr

#define PinLed  12
#define PinRes  A0

#define Thresh  500

void setup()
{
    Serial.begin(9600);
    pinMode(PinLed, OUTPUT);
}


void loop()
{
    int val = analogRead (PinRes);
    Serial.println (val);
    digitalWrite (PinLed, Thresh < val);
}

is it any way that if the photoresist is max a led flashes?