void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  //0-10 digital pins need to be setup as OUTPUT pins
  for(int i=0; i<11;i++)
  {
    pinMode(i, OUTPUT);
    delay(500); // delay is just used for visualization
    Serial.println(i);
  }
}

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


//do while loop is atleast runs even if the conditions are FALSE.