// include the library code:
#include <LiquidCrystal.h>
#include "DHT.h"

// initialize the library by associating any needed LCD interface pin
// with the arduino pin number it is connected to
const int rs = 9, en = 8, d4 = 7, d5 = 6, d6 = 5, d7 = 4; // rs= Register Select, en= Enable, D4-D7= Data Bus, rw= Read/Write
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

// initialize the library by associating any needed DHT interface pin
const int DHTpin = 2, DHTtype = DHT22; // DHT11 
DHT dht(DHTpin, DHTtype);

void setup() {
  // set up the LCD's number of columns and rows:-
  Serial.begin(9600);
  lcd.begin(16, 2);
  dht.begin();
}

void loop() {
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();

  // Check if any reads failed and exit early (to try again).
  if (isnan(temperature) || isnan(humidity)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  lcd.clear();                                      // clear display
  lcd.setCursor(0, 0);                              // move cursor to   (0, 0)
  lcd.print("Humidity:" + String(humidity) + "%");  // print message at (0, 0)
  lcd.setCursor(0, 1);                              // move cursor to   (0, 1)
  lcd.print("Temp:" + String(temperature) + "°C");  // print message at (0, 1) 
  delay(2000);                                      // display the above for two seconds  
}