void setup() {
  // put your setup code here, to run once:
   pinMode(13, INPUT);
   pinMode(8,OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  
   int ir=digitalRead(13);
   if(ir==LOW){
    digitalWrite(8,HIGH);
   }
   else{
    digitalWrite(8,LOW);
   }

}