#include "WiFi.h"
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);

void setup() {
  Serial.begin(115200);
  Serial.println("Calculator (Addition)");
  lcd.init();
  lcd.backlight();
}

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

void calculator(){
    int num1 = Serial.readString().toInt();
    lcd.setCursor(0,0);
    delay(2000);
    lcd.print(num1);
    lcd.setCursor(5,0);
    lcd.print("+");
    delay(2000);
    int num2 = Serial.readString().toInt();
    lcd.setCursor(8,0);
    delay(2000);
    lcd.print(num2);
    int sum = num1 + num2;
    lcd.setCursor(0,1);
    delay(2000);
    lcd.print(sum);
    delay(1000);
    lcd.clear();
}