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

void setup() {
  for(int i=0; i<8; i++)
    pinMode(fnd[i], OUTPUT);
  
  digitalWrite(fnd[0], 0);
  digitalWrite(fnd[1], 1);
  digitalWrite(fnd[2], 0);
  digitalWrite(fnd[3], 0);
  digitalWrite(fnd[4], 1);
  digitalWrite(fnd[5], 0);
  digitalWrite(fnd[6], 0);
  digitalWrite(fnd[7], 0);
}

void loop() {

}