const int trig = 2;
const int echo = 3;

long duration, Distanceincm, Distanceininch;

void setup() {
  Serial.begin(9600);
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);
}

void loop() {
  digitalWrite(trig, HIGH);
  delay(15);
  digitalWrite(trig, LOW);
  duration = pulseIn(echo, HIGH);
  Distanceincm = duration / 58; // time to centimetres
  Distanceininch = duration / 148; // time to inches
  Serial.print("Distance in cm = ");
  Serial.print(Distanceincm);
  Serial.print(" Distance in inches = ");
  Serial.println(Distanceininch);
  delay(500);
}