int trig=9;
   int echo=10;
   long duration;
   int distance;
   void setup() {
  // put your setup code here, to run once:
  
   pinMode(trig, OUTPUT);
   pinMode(echo, INPUT);
   Serial.begin(9600);


}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(trig, LOW);
  delayMicroseconds(1000);
  digitalWrite(trig, HIGH);
  delayMicroseconds(2000);
  digitalWrite(trig,LOW);
  duration=pulseIn(echo,HIGH);
  distance=duration*0.34/2;
  Serial.println("Distance");
  Serial.println(distance);


}