int switch1 = 13;
int led = 12;

void setup() {
  // put your setup code here, to run once:
  pinMode(switch1, INPUT_PULLUP);
  pinMode(led, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  int status;
  status=digitalRead(switch1);
  Serial.println(status);
  digitalWrite(led, HIGH);
  delay(100);
}