const int pinPB= 13; 
const int pinled= 8; 
int tombol; 

void setup() {
  tombol= digitalRead (pinPB);
  pinMode (pinPB, INPUT);
  pinMode (pinled, OUTPUT);
}

void loop() {
  if (tombol==HIGH){
    digitalWrite (pinled, HIGH);
  }else{
    digitalWrite (pinled, LOW); 
  }
}