void setup() {
  // put your setup code here, to run once:
pinMode(13,OUTPUT );
pinMode(3, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
int x=digitalRead(3);
if(x==HIGH)
{
  digitalWrite(13,HIGH);
}
else
{
  digitalWrite(13,LOW);

}
delay(1000);
}