Basic LED blink

This is very simple project with arduino in witch u make LED blink.
Conect LEDs anode to arduino pin 13 and cathode to arduino GND pin.
Code is very simple:
void setup() {
Serial.begin(9600); // Start serial monitor
pinMode(13, OUTPUT); // set pin 13 as output pin
}
void () {
digitalWrite(13, HIGH); //set pin 13 as high pin
Serial.write("LED: on"); //write on serial monitor that led is on
delay(500); //wait half of second
digitalWrite(13, LOW); //set pin 13 as low pin
Serial.write("LED: off"); //write on serial monitor that led is off
delay(500); //wait half of second again
}