#include <Wire.h>

#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,16,2);  //Change the HEX address

int IR1 = 2;

int IR2 = 4;

int COUNT = 0;          

int flag1 = 0;

int flag2 = 0;

void setup() {

  lcd.begin();

  lcd.backlight();

  pinMode(IR1, INPUT);

  pinMode(IR2, INPUT);

lcd.setCursor (0,0);

lcd.print("     ARDUINO    ");

lcd.setCursor (0,1);

lcd.print(" BASED VISITOR COUNTER ");

delay (2000);

lcd.clear();  

}

void loop(){

if(digitalRead (IR1) == LOW && flag1==0){

if(COUNT>0){flag1=1;

if(flag2==0){digitalRead(0); COUNT = COUNT-1;}

}else{

//lcd.setCursor (0,0);

//lcd.print("    SORRY :(    ");  

//lcd.setCursor (0,1);

//lcd.print("  Parking Full  ");

//delay (3000);

lcd.clear();

}

}

if(digitalRead (IR2) == LOW && flag2==0){flag2=1;

//if(flag1==0){myservo1.write(0); Slot = Slot+1;}

}

if(flag1==1 && flag2==1){

delay (1000);

//myservo1.write(100);

flag1=0, flag2=0;

}

lcd.setCursor (0,0);

lcd.print("    WELCOME!    ");

lcd.setCursor (0,1);

lcd.print("PERSON IN ROOM: ");

lcd.print(COUNT);

}