const int ledpin =2;
const int sensorpin =4;
const int led =0;
void setup(){
  pinMode (ledpin,OUTPUT);
  pinMode (led,OUTPUT);
  pinMode (sensorpin,INPUT);
}

void loop(){
  int PIRvalue = digitalRead(sensorpin);
  if(PIRvalue == HIGH){
    digitalWrite(led,LOW);
    digitalWrite(ledpin,HIGH);
    delay(1000);
  }
  else{
    digitalWrite(ledpin,LOW);
    digitalWrite(led,HIGH);
  }
}