#include DHT.h
#define DHTPIN 2
#define DHTTYPE DHT22
int H = 30 ;
int T = 45 ;
DHT dht (DHTPIN, DHTTYPE) ;
void setup() {
  Serial.begin(9600) ;
  pinMode(7, OUTPUT) ; fan
  pinMode(6, OUTPUT) ; heater
  pinMode(5, OUTPUT) ; Blue
  pinMode(4, OUTPUT) ; Green
  pinMode(3, OUTPUT) ; Red
  dht.begin();
  digitalWrite (7, LOW) ; switch off the fan
  digitalWrite (6, LOW) ; switch off the heater
  digitalWrite (5, LOW) ; switch off the blue
  digitalWrite (4, LOW) ; switch off the green
  digitalWrite (3, LOW) ; switch off the red
}

void loop() {
  delay(2000) ;
  float hf = dht.readHumidity () ;
  int hi = (int) hf;
  float tf = dht.readTemperature() ;
  int ti = (int) tf;
  float f = dht.readTemperature(true) ;
  if (ti  T) {
    Serial.print(Temperature= ) ;
    Serial.println(ti) ;
    digitalWrite (7, HIGH) ; switch on the fan
    digitalWrite (6, HIGH) ; switch on the heater
    digitalWrite (3, HIGH) ; switch on the red
    digitalWrite (5, LOW) ; switch off the blue
    digitalWrite (4, LOW) ; switch off the green
  }
  else {
    Serial.print(Optimum Temperature) ;
    Serial.println(ti) ;
    digitalWrite (6, LOW) ; switch off the heater
  }
  if (hi  H)
  {
    Serial.print(Humidity= ) ;
    Serial.println(hi);
    digitalWrite (7, HIGH) ; switch on the fan
    digitalWrite (5, HIGH) ; switch on the Blue
    digitalWrite (3, LOW) ; switch off the red
    digitalWrite (4, LOW) ; switch off the green
  }
  else
  { Serial.println(Optimum Humidity) ;
  }
  if (ti = T && hi = H )
  {
    digitalWrite (7, LOW); switch off the fan
    digitalWrite (5, HIGH) ; switch on the Blue
    digitalWrite (4, HIGH) ; switch on the Green
    digitalWrite (3, HIGH) ; switch on the Red
  }
}