Dial and LED map function

void setup() {

Serial.begin(9600); //begin serial communication

pinMode(A0,INPUT); //A0 is an input

pinMode(9, OUTPUT); //pin 9 is an output

}

void loop() {

int dialValue=analogRead(A0); //read from pin A0 and store it to variable

int newValue = map(dialValue,0,1023,0,255); //newValue now ranges from 0 to 255

Serial.print("The dial Value is " ); //print text

Serial.print(dialValue); //print that value

Serial.print(" The new Value is "); //print text

Serial.println(newValue); //print that value with a new line

analogWrite(9,newValue); //send that newValue value to pin 9

}