int LED1 = 23; //Active Low
int Pb1 = 34; //Pull Down

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Tugas No.2, Muhammad Luthfi Adri_ 2102331017_ AB-5K");
  pinMode(LED1, OUTPUT);
  pinMode(Pb1, INPUT_PULLDOWN);
}

void loop() {
  // put your main code here, to run repeatedly:
  
  

  pb_led(Pb1, LED1);
}

void pb_led(int ch_in, int ch_out){
  if(digitalRead(ch_in) == HIGH){
    digitalWrite(ch_out,  LOW);
  }else if(digitalRead(ch_in) == LOW){
    digitalWrite(ch_out, HIGH);
  }
}