void setup(){

  pinMode(2, OUTPUT);
  pinMode(4, INPUT);
  pinMode(16, INPUT);

}

bool btn = 0;
bool btn1 = 0;

void loop(){

  btn = digitalRead(4);
  btn1 = digitalRead(16);

  if(btn == 1){
    digitalWrite(2, HIGH);
  }
    
  if(btn1 == 1){
    digitalWrite(2, LOW);
  }
  
}