#define echo 7
#define trig 6
const int btnled = 2,pirled = 3,ultled=8;
const int btn = 4,Pir = 5;
int count = 0;
void setup() {
 pinMode(btnled, OUTPUT);
 pinMode(pirled, OUTPUT);
 pinMode(ultled,OUTPUT);
 pinMode(echo, INPUT);
 pinMode(trig, OUTPUT);
 pinMode(btn, INPUT);
 pinMode(Pir, INPUT);
}

void loop() {
  digitalWrite(trig, HIGH);
  delayMicroseconds(10);
  digitalWrite(trig,LOW);
  int distance = pulseIn(echo,HIGH)/58;
  
  const int btnVal = digitalRead(btn);
  const int PirVal = digitalRead(Pir);

  if(distance>=200 && distance<=300){
    digitalWrite(ultled,HIGH);
    delay(100);
    if(btnVal==HIGH){
      digitalWrite(btnled, HIGH);
      delay(100);
      if(PirVal==HIGH){
        digitalWrite(pirled, HIGH);
        delay(100);
      }else{
        digitalWrite(pirled, LOW);
        delay(100);
      }
    }else{
      digitalWrite(btnled,LOW);
      digitalWrite(pirled, LOW);
      delay(100);
    }
  }else{
    digitalWrite(ultled,LOW);
    delay(100);
  }
 
 


}