#include <LiquidCrystal.h> // includes the LiquidCrystal Library 
LiquidCrystal lcd(12, 11, 5, 4, 3, 2); // Creates an LCD object. Parameters: (rs, enable, d4, d5, d6, d7)
const int trigPin = 9;
const int echoPin = 8; 
long duration;
int distanceCm, distanceInch;
void setup() { lcd.begin(16,2); // Initializes the interface to the LCD screen, and specifies the dimensions (width and height) of the display 
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);
distanceCm= duration*0.034/2;
distanceInch = duration*0.0133/2;
lcd.setCursor(0,0); // Sets the location at which subsequent text written to the LCD will be displayed
lcd.print("Distance: "); // Prints string "Distance" on the LCD
lcd.print(distanceCm); // Prints the distance value from the sensor 
lcd.print(" cm");
delay(10); 
lcd.setCursor(0,1); 
lcd.print("Distance: ");
lcd.print(distanceInch);
lcd.print(" inch");
delay(10);
}