void setup() {
  // put your setup code here, to run once:
  pinMode(13,OUTPUT);

 // Taster
  pinMode(9, INPUT_PULLUP);
}

void loop() {
  // put your main code here, to run repeatedly:
  int variable = digitalRead(9);
  int led_read = digitalRead(13);
  
 if (variable == LOW && led_read == HIGH){
    digitalWrite(13,LOW);
  } else if (variable == LOW) {
    digitalWrite(13, HIGH);
  }


}