DHT22 code

/*  DHT11/ DHT22 Sensor Temperature and Humidity Tutorial
 *  Program made by Dejan Nedelkovski,
 *  www.HowToMechatronics.com
 */
/*
 * You can find the DHT Library from Arduino official website
 * https://playground.arduino.cc/Main/DHTLib
 */

#include "DHT.h"
#define DHTPIN 2
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);
//Variables
int chk;
float hum;  //Stores humidity value
float temp; //Stores temperature value

void setup()
{
    Serial.begin(9600);
	dht.begin();

}

void loop()
{
    //Read data and store it to variables hum and temp
    hum = dht.readHumidity();
    temp= dht.readTemperature();
    //Print temp and humidity values to serial monitor
    Serial.print("Humidity: ");
    Serial.print(hum);
    Serial.print(" %, Temp: ");
    Serial.print(temp);
    Serial.println(" Celsius");
    delay(2000); //Delay 2 sec
}