int LED = 23;
int BOTONON = 2;
int BOTONOFF = 4;
int valON = 0;
int valOFF = 0;

void setup() {
  pinMode(LED, OUTPUT);
  pinMode(BOTONON, INPUT);
  pinMode(BOTONOFF, INPUT);
}

void loop() {
  valON = digitalRead(BOTONON);
  valOFF = digitalRead(BOTONOFF);
  
  if (valON == 1) {
    digitalWrite(LED, HIGH);
  } 
  else if (valOFF == 1) {
    digitalWrite(LED, LOW);
  }
}