// C++ code
//
void setup()
{
  pinMode(22, OUTPUT);
  pinMode(23, OUTPUT);
}

void loop()
{
  digitalWrite(22, HIGH);
  digitalWrite(23, LOW);
  delay(1000); // Wait for 1000 millisecond(s)
  digitalWrite(23, HIGH);
  digitalWrite(22, LOW);
  delay(1000); // Wait for 1000 millisecond(s)
}