const int ledCount = 10;

int ledPins[] = {
  2, 3, 4, 5, 6, 7, 8, 9, 10, 11
};

void setup() {
  for (int thisLed = 0; thisLed < ledCount; thisLed++) {
    pinMode(ledPins[thisLed], OUTPUT);
  }
}

void loop() {
  // put your main code here, to run repeatedly:

}