#define LED 13
#define BUTTON 2
void setup()
{
  pinMode(BUTTON, INPUT);
  pinMode(LED, OUTPUT);
}

void loop()
{
  int buttonstate=digitalRead(BUTTON);
  if(buttonstate==1){
  digitalWrite(LED, HIGH);
  delay(1000);
  }
  else{
  digitalWrite(LED, LOW);
  delay(1000);
  }
}