#include <LiquidCrystal.h>
const int rs=7,es=6,d4=11,d5=10,d6=9,d7=8;
LiquidCrystal lcd (rs,es,d4,d5,d6,d7);
int trigerpin=13;
int echopin=12;
int buzz=5;
void setup() {
  lcd.begin(16,2);
  lcd.setCursor(0,0);
  lcd.print(" WELCOME ");
  delay(1500);
  lcd.clear();
pinMode(trigerpin, OUTPUT);
pinMode(echopin, INPUT);

}

void loop()
{
  digitalWrite(trigerpin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigerpin, HIGH);
  delayMicroseconds(10);
 duration=pulseIn(echopin,HIGH);
 distance=duration*0.034/2;


 if(int i>0 && i<=100)
 {
   digitalWrite(buzz,1);
  tone(buzz,100);
  lcd.setCursor(1,0);
  lcd.print("INT=0-100");
  delay(1500);
 }

 else if(int i>0 && i<=100)
 {
   digitalWrite(buzz,1);
  tone(buzz,200);
  lcd.setCursor(1,0);
  lcd.print("INT=100-200");
  delay(1500);
 }

 else if(int i>100 && i<=200)
 {
   digitalWrite(buzz,1);
  tone(buzz,300);
  lcd.setCursor(1,0);
  lcd.print("INT=200-300");
  delay(1500);
 }
 else (int i>0 && i<=100)
 {
   digitalWrite(buzz,1);
  tone(buzz,400);
  lcd.setCursor(1,0);
  lcd.print("INT=300-400");
  delay(1500);
 }
}