int temp=25;

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);
    Serial.println(i);
  }
}

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

}