const int LED_PINS[] = {2, 3, 4, 5, 6, 7, 8, 9};


void setup() 
{
  int LED_PINS[] = {2, 3, 4, 5, 6, 7, 8, 9};
  
  // Initialize each LED pin as an output
  for (int i = 0; i < 8; i++)
  {
    pinMode(LED_PINS[i], OUTPUT);
  }
}

void loop()

{
   // Cycle through each LED
  for (int i = 0; i < 8; i++)
  {
    digitalWrite(LED_PINS[i], HIGH);   // Turn the LED off
    delay(500); 
    digitalWrite(LED_PINS[i], LOW); // Turn the LED on
    
  }
 }