#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
#define  Up 11
#define Down 12
int c = 0;

void setup()
{
  pinMode(Up, INPUT_PULLUP);
  pinMode(Down, INPUT_PULLUP);
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("Up/Down Counter");
  lcd.setCursor(2, 1);
  lcd.print("zaher.co.il");
  delay(2000);
  lcd.clear();
  lcd.setCursor(5, 0);
  lcd.print("Counter");
}


void loop()
{
  if (digitalRead(Up) == 0)
  {
    delay(250);
    if (c == 9)
      c = 0;
    else
      c++;
  }
  if (digitalRead(Down) == 0)
  {
    delay(250);
    if (c == 0)
      c = 9;
    else
      c--;
  }
  lcd.setCursor(7, 1);
  lcd.print(c);
}