SOS Code with functions

This is an arduino code using simple instructions, that is, digitalWrite in order to switch ON or OFF a LED and delay in order to choose the right time to be ON or OFF:

    //This is an SOS code using instructions with variables
    /*
  Blink


  Turns an LED on for one second, then off for one second, repeatedly.

  Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO
  it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to
  the correct LED pin independent of which board is used.
  If you want to know what pin the on-board LED is connected to on your Arduino
  model, check the Technical Specs of your board at:
  https://www.arduino.cc/en/Main/Products

  modified 8 May 2014
  by Scott Fitzgerald
  modified 2 Sep 2016
  by Arturo Guadalupi
  modified 8 Sep 2016
  by Colby Newman

// the setup function runs once when you press reset or power the board
void setup() {
pinMode(LED_BUILTIN, OUTPUT);
}
const int t =200;
void S (){
digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the
voltage level)
delay(t); // wait for a second
digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the
voltage LOW
delay(t);
digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the
voltage level)
delay(t); // wait for a second
digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the
voltage LOW
delay(t);
digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the
voltage level)
delay(t); // wait for a second
digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the
voltage LOW
delay(t);
delay(3*t);
}
void O (){
digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the
voltage level)
delay(t); // wait for a second
digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the
voltage LOW
delay(3*t);
digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the
voltage level)
delay(t); // wait for a second

digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the
voltage LOW
delay(3*t);
digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the
voltage level)
delay(t); // wait for a second
digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the
voltage LOW
delay(3*t);
delay(3*t); // wait for a second
}
// initialize digital pin LED_BUILTIN as an output
// the loop function runs over and over again forever
void loop() {
S();
O();
S();
}