void setup() {
  // put your setup code here, to run once:

  pinMode(1, OUTPUT);
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(11, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  
  if(digitalRead(11) == HIGH){ //HIGH means pressed //button 1 to turn on LED lights
    digitalWrite(1, HIGH);
    digitalWrite(2, HIGH);
    digitalWrite(3, HIGH);    
  }
  
  else {
    digitalWrite(1, LOW);
    digitalWrite(2, LOW); 
    digitalWrite(3, LOW);  
  }
  
}

// WHEN BUTTON PRESS, THE LIGHT TURN ON BUT WHEN NOT PRESSED, IT TURN OFF
  // if(digitalRead(11) == HIGH){ //HIGH means pressed
  //   digitalWrite(1, HIGH);
  //   digitalWrite(2, HIGH);  
  // }
  // else {
  //   digitalWrite(1, LOW);
  //   digitalWrite(2, LOW);
  // }