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

LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  Serial.begin(9600);
  lcd.init();
  lcd.backlight();
  Serial.println("Calculator for addition");
}

void calculator() {
  Serial.println("Enter 1st number");
  int num1 = Serial.readString().toInt();
  lcd.setCursor(0, 0);
  lcd.print("1st number: ");
  lcd.print(num1);
  Serial.print("1st number: ");
  Serial.println(num1);

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

  Serial.println("Enter 2nd number");
  int num2 = Serial.readString().toInt();
  lcd.setCursor(8, 0);
  lcd.print("2nd number: ");
  lcd.print(num2);
  Serial.print("2nd number: ");
  Serial.println(num2);

  int result = num1 + num2;
  lcd.setCursor(0, 1);
  lcd.print("Result: ");
  lcd.print(result);

  Serial.print("Result: ");
  Serial.println(result);

  delay(1000);
  lcd.clear();
}

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