#include <LiquidCrystal.h>

LiquidCrystal lcd = LiquidCrystal(13,12,7,6,5,4);

int cislo = 0;
bool test = true;
bool test2 = true;

void setup() 
{
  lcd.begin(16,2);
  pinMode(A5, INPUT_PULLUP);


  pinMode(A4, INPUT_PULLUP);

}

void loop() 
{
  if (digitalRead(A5) == LOW && test == true)
  {
    test = false;

    if(cislo < 10)
    {
      cislo++;
      lcd.clear();
      lcd.print(cislo);
    }

  }
  else if (digitalRead(A5) == HIGH && test == false)
  {
    test = true;
  }


  if (digitalRead(A4) == LOW && test2 == true)
  {
    test2 = false;

    if(cislo > -1)
    {
      cislo--;
      lcd.clear();
      lcd.print(cislo);
    }

  }
  else if (digitalRead(A4) == HIGH && test2 == false)
  {
    test2 = true;
  }

  lcd.home();
    lcd.print(cislo);
    lcd.print(" ");


}