#define button 11
#define LED 12
int sw;
void setup() {
Serial.begin(9600);
pinMode(button, INPUT_PULLUP);
Serial.println("click the button");

}

void loop() {
  sw = digitalRead(button);
  if(sw == 1)
  {
digitalWrite(LED,0);
Serial.println("LED OFF");
  }
else
 {
digitalWrite(LED,1);
Serial.println("LED ON");

 } 
 delay(1000);

}