#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);  

const int enterButtonPin = 2; 
const int exitButtonPin = 3;  

int parkingCount = 0;
void setup() {
  lcd.begin(16, 2);
  pinMode(enterButtonPin, INPUT_PULLUP);
  pinMode(exitButtonPin, INPUT_PULLUP);
  displayCount();
}

void loop() {
  if (digitalRead(enterButtonPin) == LOW) {
    delay(100); 
    if (digitalRead(enterButtonPin) == LOW) {
      parkingCount++;
      displayCount();
      delay(1000); 
    }
  }
  if (digitalRead(exitButtonPin) == LOW) {
    delay(100);
    if (digitalRead(exitButtonPin) == LOW && parkingCount > 0) {
      
      parkingCount--;
      displayCount();
      delay(1000); 
    }
  }
}

void displayCount() {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Parking Count: ");
  lcd.print(parkingCount);
  lcd.setCursor(0, 1);
  delay(1000); 
}