#include <DHT.h>
#include <LiquidCrystal_I2C.h>
int DHT11_PIN = 13;
LiquidCrystal_I2C lcd(0x27, 16, 2);
DHT dht11(DHT11_PIN, DHT11);

void setup() {
  dht11.begin();
  lcd.init();
  lcd.backlight();
}
String formatFloat(float value, int precision) {
  char buffer[10];
  sprintf(buffer, "%.*f", precision, value);
  return String(buffer);
}
void loop() {
  float humi = dht11.readHumidity();      // read humidity
  float tempC = dht11.readTemperature();  // read temperature
  lcd.clear();
  if (isnan(tempC) || isnan(humi)) {
    lcd.setCursor(0, 0);
    lcd.print("Failed");
  } else {
    lcd.setCursor(0, 0);
    lcd.print("TEMPERATURE:" + String(formatFloat(tempC, 2)) );
    lcd.setCursor(0, 1);  // display position
    lcd.print("HUMIDITY:" + String(humi) + "%");
  }
  delay(2000);
}