#include "DHT.h"
#define DHTTYPE DHT22

#define dht_dpin 21
DHT dht(dht_dpin, DHTTYPE);
void setup(void) {
  dht.begin();
  Serial.begin(9600);
  Serial.println("humidty temperature/n/n");
  delay(2000);
}

void loop() {
  float h=dht.readHumidity();
  float t=dht.readTemperature();
  Serial.print("current humidity= ");
  Serial.print(h);
  Serial.print("% ");
  Serial.print("current temperature= ");
  Serial.print(t);
  Serial.print("degree ");
  
}