#include<Wire.h>
#include<LiquidCrystal_I2C.h>
#include<DHT.h>

LiquidCrystal_I2C mylcd(0x27,16,2);
DHT dht2(2,22)
volatile int tem
volatile int hum
void setup() {
  mylcd.init();
  mylcd.backlight();
  dht2.begin();
  tem = 0;
  hum = 0;
  
  pinMode(2, INPUT);
  pinMode(7, INPUT);
  pinMode(8, INPUT);
}

void loop() {
  tem=dht2.readTemperature();
  hum=dht2.readHumidity();
  
  
  mylcd.clear();
  mylcd.setCursor(0,0);
  mylcd.print(String("Tem:")+String(tem)+String("")+String(char(0xdf))+String("℃"));
  mylcd.setCursor(0,1);
  mylcd.print(String("HUM:")+String(hum)+String("%"));
  delay(200);


  if(digitalRead(8)){
    mylcd.clear();
    mylcd.setCursor(0,0);
    mylcd.print(String("F: ")+ String(tem*1.8+32)+String(" ")+String(char(0xdf))+String("F"))
    mylcd.setCursor(0,1);
    mylcd.print(String("HUM: ")+ String(hum)+String(" %"))
  delay(3000);
  }

  if(digitalRead(7)){
    mylcd.clear();
    mylcd.setCursor(0,0);
    mylcd.print(String("K: ")+ String(tem+273.15)+String(" ")+String(char(0xdf))+String("K"))
    mylcd.setCursor(0,1);
    mylcd.print(String("HUM: ")+ String(hum)+String(" %"))
  delay(3000);
  }
}