// www.ProgettiArduino.com
  
  #define LED 11             
  #define SWITCH 5


void setup() {  
  pinMode(LED, OUTPUT);
  pinMode(SWITCH, INPUT);
}  
  
void loop() {  
  if(digitalRead(SWITCH)==LOW)
  {
    digitalWrite(LED, LOW);
  }
  else
  {
    digitalWrite(LED, HIGH);
  }
}