Project 2 - Measuring the distance of an object using ultrasonic sensor and also smoothen the sensor data using moving average filter

Code for the project

int trigPin = 11; // Trigger
int echoPin = 12; // Echo
long duration, cm, inches;
long sum=0;
long avg;
int i;

void setup()

{
Serial.begin (9600); //Serial Port begin Serial.begin (9600);
pinMode(trigPin, OUTPUT); //Define inputs and outputs
pinMode(echoPin, INPUT);
}

void loop()
{
digitalWrite(trigPin, LOW); //triggering the sensor by giving low and high inputs
delayMicroseconds(5);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);

pinMode(echoPin, INPUT); // Read the signal from the sensor
duration = pulseIn(echoPin, HIGH);

// Convert the time into a distance
cm = (duration/2) / 29.1; // Divide by 29.1
inches = (duration/2) / 74; // Divide by 74

for (i=0; i<5; i++) //For moving average filter
{
sum=sum+inches;
avg = sum/5;
}

Serial.println(); //for printing results
Serial.print("Avg is ");
Serial.print(avg);
Serial.println();
Serial.print(cm);
Serial.print("cm");
Serial.println();
Serial.print(inches);
Serial.print("in");
delay(1000);
}

Tinkercad link: https://www.tinkercad.com/things/8KkFDX2Pkfh-exquisite-amur/editel?tenant=circuits