//LED
int buttonPin = 2;    
int ledPin =  3;    
int ledPin1 =  4; 
int ledPin2 =  5;   

int buttonState = 0;         
void setup() {
 
  pinMode(ledPin, OUTPUT);
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(buttonPin, INPUT);
}
void loop() {
  
  buttonState = digitalRead(buttonPin);
 
  if (buttonState == HIGH) {
   
    digitalWrite(ledPin, HIGH);
    digitalWrite(ledPin1, HIGH);
    digitalWrite(ledPin2, HIGH);

  } else {
    
    digitalWrite(ledPin, LOW);
    digitalWrite(ledPin1, LOW);
    digitalWrite(ledPin2, LOW);

  }
}