#include <LiquidCrystal.h>
LiquidCrystal obr = LiquidCrystal(9,8,5,4,3,2); //rs,e,D4,D5,D6,D7
int cislo;
bool test = true;
bool test2 = true;
void setup() 
{
  obr.begin(16,2);
  pinMode(A4, INPUT);
  digitalWrite(A4, HIGH);
  pinMode(A5, INPUT);
  digitalWrite(A5, HIGH);

}
void loop() 
{
  if(digitalRead(A4) == LOW && test == true)
  {
    test = false;
    if(cislo < 10)
    cislo++;
  }
else if (digitalRead(A4) == HIGH && test == false)
{
  test = true;
}
if(digitalRead(A5) == LOW && test2 == true)
  {
    test2 = false;
    if (cislo > -1)
    cislo--;
  }
 else if (digitalRead(A5)== HIGH && test2 == false)
{
  test2 = true;
  obr.home();
  obr.print(cislo);
  obr.print(" ");
}
}