Class2_reading potentiometer and setting PWM

/*
  Reading a potentiometer on analog pin A0
 and printing out the value
 and controls the PWM of an LED
 */

int potValue = 0;
int potPin = A0;
int pwmValue = 0;
int ledPin = 6;

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

void loop(){
  potValue = analogRead( potPin );
  Serial.print("potValue = ");
  Serial.println(potValue);

  pwmValue = map(potValue, 0, 1023, 0, 255);
  analogWrite(ledPin, pwmValue);
  delay(100);
}