#include <DHT.h>//include adafruit library unified sensor
#define DHTPIN A0//set DHT pin:
#define DHTTYPE DHT22 //set DHT type, DHT 22
DHT dht = DHT(DHTPIN, DHTTYPE); //Initialize DHT sensor for normal 16mhz Arduino:

void setup()
{
  Serial.begin(9600); //begin serial communication at a band rate of 9600:
  dht.begin(); //setup sensor:
}
void loop()
{
  delay(2000); //wait a 2 seconds between measurements:
  //reading temperature or humidity takes about 250 milliseconds!
  //sensor readings may also be up to 2 seconds 'old'
  float h = dht.readHumidity();// read the humidity in %:
  float t = dht.readTemperature();//read the temperature as celsius:
  Serial.print("Humidity: ");//serial monitor to display the word "Humidity"
  Serial.print(h);//serial monitor to display the value of humidity in the sensor 
  Serial.print("%");//serial monitor to display "%"
  Serial.print(" Temperature: ");//serial monitor to display the word "Temperature"
  Serial.print(t);//serial monitor to display the value of temperature in the sensor
  Serial.print("\xC2\xB0");
  Serial.println("C |");//serial monitor in line format to display the word "C |"
  }