#define SW 5
#define LED 13
bool LEDOn=false;
bool switchOn =true;


void setup() {
  // put your setup code here, to run once:
pinMode(SW, INPUT_PULLUP);
pinMode(LED,OUTPUT);
}

void loop() {
  if (digitalRead(SW) && !switchOn){
    if (LEDOn){
      LEDOn =false;
      digitalWrite(LED,LOW);
      }else {LEDOn = true;
      digitalWrite(LED,HIGH);
      }
    }
  switchOn =digitalRead(SW);
  delay(100);
  }