const int pins[] = {6, 11};

void setup() {
  Serial.begin(115200);
  for (auto pin : pins)
    pinMode(pin, INPUT_PULLUP);
}

void loop() {
  for (auto pin : pins) {
    Serial.print(pin);
    Serial.print('=');
    Serial.print(digitalRead(pin));
    Serial.print(' ');
  }
  Serial.println();
  delay(100);
}