int trigpin =3;
int echopin = 2;
int time;
int distance;

void setup() {
  // put your setup code here, to run once:
  pinMode(trigpin, OUTPUT);
  pinMode(echopin, INPUT);
  Serial.begin(9600);
  Serial.print("Ultrasonic Distance.....");
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(trigpin, LOW);
  digitalWrite(trigpin, HIGH);
  time = pulseIn(echopin,HIGH);
  distance = time * 0.0172;
  Serial.print("Time - ");
  Serial.print(time);
  Serial.print(" Microseconds - ");
  delay(1000);
  Serial.print("Distance - ");
  Serial.print(distance);
  Serial.println("centimeter - ");
  delay(1000);
}