Parking Simulator

#include <LiquidCrystal.h>; 
 
LiquidCrystal lcd(12,11,5,4,3,2); 

 const int trigPin=8; 
 const int echoPin=9; 
 
int Led= 13; 
 
long duration; 
int distance;  
 
 
void setup() {   
lcd.begin (16,2);   
pinMode (Led, OUTPUT);   
pinMode (trigPin, OUTPUT);   
pinMode (echoPin, INPUT);   
Serial.begin (9600);   
pinMode (6, OUTPUT); } 
 
void loop()  {   
digitalWrite (trigPin, HIGH);   
delayMicroseconds (10);   
digitalWrite (trigPin, LOW);   
duration = pulseIn (echoPin, HIGH);   
distance = duration/58   ;      
Serial.print ("Distance: ");   
Serial.print (distance);   
Serial.println (" cm");   
delay (20); 
 
lcd.setCursor(0,0);   
lcd.print("Distance: ");    
lcd.print(distance);     
lcd.print("  cm");   
if(distance<15)   
{ 
tone(6,1500,250);     
delay(250);   

}