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

https://www.instructables.com/Read-a-Photoresistor-With-Analog-Input/#:~:text=Click%20to%20create%20a%20wire%20connecting%20one%20photoresistor,ground%2C%20and%20adjust%20its%20value%20to%204.7k%20ohms.

Why try use digital read with a photoresistor when the photoresistor puts out an analog value?

not tested but something

// C++ code
//
void setup()
{
  pinMode(12, OUTPUT);
  //pinMode(A0, INPUT);
  Serial.begin(9600);
}

void loop()
{
  int aoRead = analogRead(A0);
  
  if (aoRead > 1024/2 )
  {
    Serial.println("av");
    delay(5000);
  }
  if ( aoRead <= 1024/2)
  {
    Serial.print("Avlest lysmengde er:  ");//print out lightlevel value
Serialprint( aoRead );
Serial.println();
    digitalWrite(12, HIGH);
    delay(1000); // Wait for 1000 millisecond(s)
    digitalWrite(12, LOW);
    delay(1000); // Wait for 1000 millisecond(s)
  }
}