#include <LiquidCrystal_I2C.h>

#define I2C_ADDR    0x27
#define LCD_COLUMNS 20
#define LCD_LINES   4

byte buttonPin = 2, buttonPin2 = 4;
byte ledpin = 3;
bool start = false;
int szamlalo=0;

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

void setup() {
  pinMode( buttonPin, INPUT_PULLUP);
  pinMode( buttonPin2, INPUT_PULLUP);
  lcd.init();
  lcd.backlight();
  lcd.setCursor(3, 0);
  lcd.print("Kiraly Alex");
  delay(3000);
  lcd.clear();
}


void loop() 
{
  if( digitalRead( buttonPin) == LOW)
  {
    while (digitalRead( buttonPin) == LOW)
    {
      delay(10);
    }
   szamlalo=szamlalo+1;
  }
  delay(10);

  
      if( digitalRead( buttonPin2) == LOW)
  {
    while (digitalRead( buttonPin2) == LOW)
    {
      delay(10);
    }
  szamlalo=szamlalo-1;
  }
  
    lcd.setCursor(8,1);
    lcd.print(szamlalo);

    if(szamlalo==254)
    {
    lcd.clear();
    lcd.setCursor(8,1);
    szamlalo=0;
    }
}