int potentiometerpin = A0;
int reading = 0;
void setup() {
  // put your setup code here, to run once:
pinMode(potentiometerpin, INPUT);
Serial.begin(9600);
}

void loop() {
reading = analogRead(potentiometerpin);
Serial.print("Potentiometer : ");
Serial.println(reading);
delay(1000);
}