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

void loop() {
  Serial.println(analogRead(A2)); //(semal L (l)h) , analog pin A2 se joda gya h
  delay(2000);// 2secon k bad read kata rahe ga 
}

// LDR= light depended Resister
// ja ha bhi serial monitar likaha ho vaha (void setup) k bad (serial.brgin(9600)) likate h