//ex 1-C
int ledPins[] = {2, 3, 4, 5, 6, 7, 8, 9, 10, 11};
int potPin = A0;

void setup() {
  Serial.begin(9600);
  for (int i = 0; i < 10; i++) {
    pinMode(ledPins[i], OUTPUT);
  }
}

void loop() {
  int posiT = analogRead(potPin);
  int nuLed = map(posiT, 0, 1023, 0, 10);

  for (int i = 0; i < 10; i++) {
    if (i < nuLed) {
      digitalWrite(ledPins[i], HIGH);
    } else {
      digitalWrite(ledPins[i], LOW);  
    }
  }
}