#define LED 13
#define sw1 2
boolean Sw_Status;

void setup() {
  // put your setup code here, to run once:
pinMode(LED, OUTPUT);
pinMode(sw1, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  Sw_Status = digitalRead(sw1);
  if (Sw_Status == LOW)
  {
    digitalWrite(LED, HIGH);
  }
  else
  {
    digitalWrite(LED, LOW);
  }
}