const int buttonPin = 2;  
const int buttonPin2 = 5; 
const int ledPin = 4;    

void setup() {
  pinMode(ledPin, OUTPUT);
  pinMode(buttonPin, INPUT);
  pinMode(buttonPin2, INPUT);
}

void loop() {
  int buttonState1 = digitalRead(buttonPin);
  int buttonState2 = digitalRead(buttonPin2);

  if (buttonState1 == HIGH || buttonState2 == HIGH) {
    // turn LED on:
    digitalWrite(ledPin, HIGH);
  } else {
    // turn LED off:
    digitalWrite(ledPin, LOW);
  }
}