#include <LiquidCrystal.h>

LiquidCrystal lcd(12,11,10,9,8,7); // RS,E...D7

int button = 6;
int num = 0;

void setup() {
  lcd.begin(16,2); // 16 stolpcev in 2 vrstici
  pinMode(A0, INPUT);
  pinMode(button, INPUT_PULLUP);
}

void loop() {
  int pot = map(analogRead(A0), 0, 1023, 1, 10);
  if(digitalRead(button) == LOW){
    num = num + pot;
    numPrint(num);
    while(digitalRead(button) == LOW) delay(100);
  }
  lcd.clear();
  numPrint(num);
  potPrint(pot);
  delay(50);
}

void numPrint(int y){
  lcd.setCursor(0,0);
  lcd.print(y);
}

void potPrint(int y){
  lcd.setCursor(0,1);
  lcd.print(y);
}