#include <LiquidCrystal.h>

int rs = 7;
int en = 8;
int d4 = 9;
int d5 = 10; 
int d6 = 11;
int d7 = 12;
int primerNum = 0;
int segundoNum = 0;
int resultado = 0;
char op = " ";

LiquidCrystal lcd(rs, en , d4, d5, d6, d7);

void setup() {
  // put your setup code here, to run once:
 Serial.begin(9600); 
 lcd.begin(16, 2);
 Serial.println("Calculadora");
 lcd.print("Calculadora");
 delay(1000);
 lcd.clear();
}

void loop() {
  // put your main code here, to run repeatedly:
 lcd.setCursor(0 ,0);
 lcd.print("Primer numero: ");
 while (Serial.available() == 0) {}
 primerNum = Serial.parseFloat();
 Serial.println(primerNum);
 delay(500);
 lcd.clear();
 lcd.setCursor(0, 0);
 lcd.print("Segundo numero: ");
 while (Serial.available() == 0) {
 }
 segundoNum = Serial.parseFloat();
 Serial.println(segundoNum);
 delay(500);


 lcd.clear();
 lcd.setCursor(0, 0);
 lcd.println();



}