#include <DHT.h>
#define  DHTPIN 2 
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE); 
void setup() {
  Serial.begin(9600);
  Serial.println(F("DHTxx test!"));

  dht.begin();
}

void loop()
{
  float h = dht.readHumidity();
  float t = dht.readTemperature();

if (isnan(h) || isnan(t) ) {
  Serial.println(F("Falled to read from DHT sensor!"));
} 
else {
  Serial.print(F("Humidity: "));
  Serial.print (h);
  Serial.print (F("% Temperature: "));
  Serial.print (t); 
  Serial.print (F("°C "));
  }
delay(2000);
}