I just begun with the arduino starter kit and in the second example I would like to test some changes... to learn more.

The point is to have a green LED shining and when pressing the button the two red LEDs blink

This is the code

int switchState = 0;

void setup()
{
  pinMode(2, INPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);

  // the button is pressed
  digitalWrite(3, LOW);

  digitalWrite(4, LOW);
  digitalWrite(5, HIGH);
  delay(250); // wait for a quarter second
  // toggle the LEDs
  digitalWrite(4, HIGH);
  digitalWrite(5, LOW);
  delay(250); // wait fo a quarter second
}

void loop()
{
  switchState = digitalRead(2);
  // this is a comment
  if(switchState == LOW)
  {
    // the button is not pressed
    digitalWrite(3, HIGH); // green LED
    digitalWrite(4, LOW); // red LED
    digitalWrite(5, LOW); // red LED
  }
  else
  {
    // the button is pressed
    digitalWrite(3, LOW);

    digitalWrite(4, LOW);
    digitalWrite(5, HIGH);
    delay(250); // wait for a quarter second
    // toggle the LEDs
    digitalWrite(4, HIGH);
    digitalWrite(5, LOW);
    delay(250); // wait fo a quarter second
  }
} // go back to the beginning of the loop

I added a modification into the schema(a fourth LED in parallel with the green), like this:

But the added LED is not shining. It's a long time ago I finish school and I forgot a lot of things... It is incorrect the way I'm wiring the fourth LED?

I just begun with the Arduino starter kit, and in the second example I would like to test some changes to learn more.

The point is to have a green LED shining, and when pressing the button the two red LEDs blink.

This is the code:

int switchState = 0;

void setup()
{
  pinMode(2, INPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);

  // the button is pressed
  digitalWrite(3, LOW);

  digitalWrite(4, LOW);
  digitalWrite(5, HIGH);
  delay(250); // wait for a quarter second
  // toggle the LEDs
  digitalWrite(4, HIGH);
  digitalWrite(5, LOW);
  delay(250); // wait fo a quarter second
}

void loop()
{
  switchState = digitalRead(2);
  // this is a comment
  if(switchState == LOW)
  {
    // the button is not pressed
    digitalWrite(3, HIGH); // green LED
    digitalWrite(4, LOW); // red LED
    digitalWrite(5, LOW); // red LED
  }
  else
  {
    // the button is pressed
    digitalWrite(3, LOW);

    digitalWrite(4, LOW);
    digitalWrite(5, HIGH);
    delay(250); // wait for a quarter second
    // toggle the LEDs
    digitalWrite(4, HIGH);
    digitalWrite(5, LOW);
    delay(250); // wait fo a quarter second
  }
} // go back to the beginning of the loop

I added a modification into the schema  (a fourth LED in parallel with the green), like this:

But the added LED is not shining. It's a long time ago I finish school and I forgot a lot of things. Am I wiring the fourth LED incorrectly?