void setup() {
  Serial.begin(115200);
  pinMode(A0, INPUT);
  pinMode(LED_BUILTIN, OUTPUT);
  pinMode(5, INPUT_PULLUP);
}

void loop() {

  // In this case the potentiometer is not being read. Only focus on the LED and switch.
  int switch_state = digitalRead(5);

    if (switch_state == HIGH) { //Need bracket after if/else statement. 
    digitalWrite(LED_BUILTIN, HIGH);
    }
    else {
      digitalWrite(LED_BUILTIN, LOW);
    }

  //Need to visualize the values eh?
  Serial.println(digitalRead((5)));
 
  delay(100);
}