#include <LiquidCrystal.h>

LiquidCrystal lcd(18, 5, 17, 16, 4, 0);

const int btnInc1 = 33;
const int btnDec1 = 25;
const int btnInc2 = 26;
const int btnDec2 = 27;
const int btnReset = 14;

int count1=0, count2=0;

void setup() {
  pinMode(btnInc1, INPUT_PULLUP);
  pinMode(btnDec1, INPUT_PULLUP);
  pinMode(btnInc2, INPUT_PULLUP);
  pinMode(btnDec2, INPUT_PULLUP);
  pinMode(btnReset, INPUT_PULLUP);

  lcd.begin(16, 2);
  lcd.print("Counter Program");
  delay(1000);

  update_lcd_count();
}

void loop() {
  if (digitalRead(btnInc1) == 0) {
    count1++;
    update_lcd_count();
  }

  if (digitalRead(btnDec1) == 0) {
    count1--;
    update_lcd_count();
  }

  //doit for 2 count
  if (digitalRead(btnInc2) == 0) {
    count2++;
    update_lcd_count();
  }

  if (digitalRead(btnDec2) == 0) {
    count2--;
    update_lcd_count();
  }

  //reset the count1 and count to 0
  if (digitalRead(btnReset) == 0) {
    count1 = 0;
    count2 = 0;
    update_lcd_count();
  }
}

void update_lcd_count(void) {
  lcd.clear();

  lcd.setCursor(0,0);
  lcd.print("Count1: ");
  lcd.print(count1);

  lcd.setCursor(0,1);
  lcd.print("Count2: ");
  lcd.print(count2);

  delay(500); //debounce
}