#include <LiquidCrystal.h>

LiquidCrystal lcd(13,12,11,10,9,8);
int value;

void setup() {
  // put your setup code here, to run once:
  lcd.begin(16,2);
  pinMode(2, INPUT_PULLUP);
  pinMode(3, INPUT_PULLUP);
 }

void loop() 
{
    if(digitalRead(2)==0)
    {
        value++;
        delay(300);
    }

    if(digitalRead(3)==0)
    {
        value--;
        delay(300);
    }

    lcd.setCursor(0,0);
    lcd.print(value);

}