int c = 0;

void setup() {
  // put your setup code here, to run once:
  // initialize digital pin LED_BUILTIN as an output.
  pinMode(LED_BUILTIN, OUTPUT);
  Serial.begin(9600);
  Serial.println(c);
}

// the loop function runs over and over again forever
void loop() {
  // put your main code here, to run repeatedly:
  c++;
  Serial.println("LED Blink");
  Serial.println(c);
  delay(1000);
  digitalWrite(LED_BUILTIN, HIGH);  // turn the LED on (HIGH is the voltage level)
  delay(1000);                      // wait for a second
  digitalWrite(LED_BUILTIN, LOW);   // turn the LED off by making the voltage LOW
  delay(1000);                      // wait for a second
}