#include <WiFi.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  Serial.begin(9600);
  Serial.println("Calculator for addition");

  lcd.begin(16, 2);
}

void loop() {
  calculator();
  delay(2000);
}

void calculator() {
  Serial.println("Enter 1st number");
  String input = Serial.readString();
  int num1 = input.toInt();

  lcd.setCursor(0, 0);
  lcd.print(num1);
  Serial.print(num1);

  lcd.setCursor(5, 0);
  lcd.print("+");

  Serial.print("Enter 2nd number: ");
  input = Serial.readString();
  int num2 = input.toInt();

  lcd.setCursor(8, 0);
  lcd.print(num2);
  Serial.print(num2);

  int result = num1 + num2;

  lcd.setCursor(1, 1);
  lcd.print(result);

  delay(1000);

  lcd.clear();
}