#include <DHT.h>
#include <LiquidCrystal.h>

#define DHTPIN 2
#define DHTTYPE DHT22

DHT dht(DHTPIN, DHTTYPE);

const int rs = 10, en = 9, d4 = 5, d5 = 4, d6 = 3, d7 = 8;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

float temperatureSum = 0.0;
int numReadings = 0;

void setup() {
  Serial.begin(9600);
  lcd.begin(16, 2);
  dht.begin();
}

void loop() {
  float temperature = readTemperature();
  if (!isnan(temperature)) {
    temperatureSum += temperature;
    numReadings++;

    lcd.setCursor(0, 0);
    lcd.print("Temp: ");
    lcd.print(temperature);
    lcd.print("C");

    if (numReadings == 10) {
      float averageTemperature = temperatureSum / numReadings;
      lcd.setCursor(0, 1);
      lcd.print("Avg Temp: ");
      lcd.print(averageTemperature);
      lcd.print("C");
      temperatureSum = 0.0;
      numReadings = 0;
    }

    delay(2000);
  } else {
    lcd.clear();
    lcd.print("Failed to read");
    delay(2000);
  }
}

float readTemperature() {
  delay(2000);
  float temperature = dht.readTemperature();
  return temperature;
}