#include <LiquidCrystal_I2C.h>

const int buttonPin1 = 2;  
const int buttonPin2 = 3;  
int button1_State = 0;
int button2_State = 0;
int count_value = 0;
int prestate1 = 0;  
int prestate2 = 0;  
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  pinMode(buttonPin1, INPUT);
  pinMode(buttonPin2, INPUT);
  
  lcd.init();
  lcd.backlight();
  lcd.setCursor(4, 0);
  lcd.print("Counter");
  lcd.setCursor(2, 1);
  lcd.print(count_value);
}

void loop() {
  button1_State = digitalRead(buttonPin1);
  button2_State = digitalRead(buttonPin2);

  if (button1_State == HIGH && prestate1 == 0) {
    count_value++;
    lcd.setCursor(0, 1);
    lcd.print("> ");
    lcd.print(count_value);
    lcd.print(" ");
    prestate1 = 1;
  } else if (button1_State == LOW) {
    prestate1 = 0;
  }

  if (button2_State == HIGH && prestate2 == 0) {
    count_value--;
    lcd.setCursor(0, 1);
    lcd.print("> ");
    lcd.print(count_value);
    lcd.print(" ");
    prestate2 = 1;
  } else if (button2_State == LOW) {
    prestate2 = 0;
  }
}