Analogish Thermometer

/*-----------------------------------------------
 *    Arduino Analog-ish Thermometer
 *    www.youtube.com/learnelectronics
 *    email: arduino0169@gmail.com
 *    12/26/2020
 *    You are free to use my code however you
 *    want as long as you give me credit.
 ------------------------------------------------*/

 #include "DHT.h"
 #include <Servo.h>

 #define DHTPIN 8
 #define DHTTYPE DHT11

 DHT dht(DHTPIN, DHTTYPE);
 Servo myservo;

 int potpin = 0;
 int val;
 int Tred = 0;

 void setup() {
  myservo.attach(9);  // attaches the servo on pin 9 to the servo object
  Serial.begin(9600);
  Serial.println(F("DHTxx test!"));

  dht.begin();
}

void loop(){

float f = dht.readTemperature(true);
val = (int)f;
Tred = map(val,-20,120,0,180);

Serial.println(f);
Serial.println(val);
Serial.println(Tred);

myservo.write(val);

delay(1000);



}