void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(26, INPUT);
  pinMode(25, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  int a = digitalRead(26);
  int b = digitalRead(25);
  Serial. print("nilai a=");
  Serial.println(a);
  Serial.print("nilai b=");
  Serial.println(b);
  delay(500);
  
}