const int pot = A0; 
const int LEDS = 10;   
int pin[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };  

void setup() {
for (int i = 0; i < LEDS; i++) { pinMode(pin[10], OUTPUT);}
}

void loop() {

int pots = analogRead(pot);
int lode = map(pots, 0, 1023, 0, LEDS);

for (int i = 0; i < LEDS; i++) {

if (i < lode) { digitalWrite(pin[i], HIGH);}
else {digitalWrite(pin[i], LOW);}
  }
  
}