const int trigPin = 9;
const int echoPin = 10;

long duration;
int distanceCm, distanceInch;

void setup() {
  Serial.begin(9600);       
  pinMode(trigPin, OUTPUT);  
  pinMode(echoPin, INPUT);   
}

void loop() {
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);

  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  duration = pulseIn(echoPin, HIGH);

  // Calculate the distance
  distanceCm = duration * 0.034 / 2;

  // Print the distance to Serial Monitor
  Serial.print("Distance: ");
  Serial.print(distanceCm);

  delay(500); 
}