#define TOTALUINTS 2

byte trigPin[TOTALUINTS] = {6, 8};
byte echoPin[TOTALUINTS] = {7.9};

int trigPin2 = 8;
int echoPin2 = 9;

void setup() {
  Serial.begin (9600);
  for (byte i = 0; i < TOTALUINTS ; i++) {
    pinMode(trigPin[i], OUTPUT);
    pinMode(echoPin[i], INPUT);
  }

}


void runProcess(byte trigPin, byte echoPin) {
  long duration, distance;
  digitalWrite(trigPin, LOW);  // Added this line
  delayMicroseconds(2); // Added this line
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10); // Added this line
  digitalWrite(trigPin, LOW);
  duration = pulseIn(echoPin, HIGH);
  distance = (duration / 2) / 29.1;

  if (distance >= 500 || distance <= 0) {
    Serial.println("Distance Left: Out of range");
  }
  else {
    Serial.print("Distance Left:  ");
    Serial.print(distance);
    Serial.print(" cm - ");
    float LDin = ( distance / 2.54 );
    Serial.print(LDin);
    Serial.println(" in");
  }
}


void loop() {
  for (byte i = 0; i < TOTALUINTS ; i++) {
    runProcess(trigPin[i], echoPin[i]);
    delay(500);
  }




}