void setup() {
  // put your setup code here, to run once:
  pinMode(12, OUTPUT);
  pinMode(8, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(12,LOW);
  if(digitalRead(8)==HIGH)
  {
    digitalWrite(12,HIGH);
  }
  else
  {
    digitalWrite(12,LOW);
  }
}