#include <DHT.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);

const int RED_LED = 5;
const int GREEN_LED = 18;
const int DHT_Pin = 2;
const int pushButton = 4;

float t ;
float h ;
float thresholdHigh = 16.0; 
float thresholdLow = 15.6; 
DHT dht(DHT_Pin, DHT22);

void setup(){
 lcd.init();
 lcd.backlight();
 lcd.setCursor(2,0);
 lcd.print("Temperature");
 lcd.setCursor(2,3);
 lcd.print("Aqila Practice");
 delay(3000);
 lcd.clear();
 Serial.begin(115200);
 pinMode(RED_LED, OUTPUT);
 pinMode(GREEN_LED, OUTPUT);
 pinMode(pushButton, INPUT);
}

void loop(){
int buttonState = digitalRead(pushButton);
Serial.println(buttonState);
if(buttonState == 1)
t = dht.readTemperature();
h = dht.readHumidity();
 Serial.print("Temperature: \t");
 Serial.print(t);
 Serial.print(" *C \n");
 
 lcd.setCursor(2,0);
 lcd.print("Temp : ");
 lcd.print(t);

 lcd.setCursor(2,3);
 lcd.print("Humi : ");
 lcd.print(h);

 if (t > thresholdHigh){
  {
   digitalWrite(RED_LED, HIGH);
   digitalWrite(GREEN_LED, LOW);
 }
 }
 else{
 {
   digitalWrite(GREEN_LED, HIGH);
   digitalWrite(RED_LED, LOW);
 }
  }
}