Temp. displaying Cup board

#include <DHT.h>
#include <DHT_U.h>

#include <Arduino.h>
#include <TM1637Display.h>    // 7SEG display library Include

// Module connection pins (Digital Pins)
#define CLK 2                 // Arduino Nano Pin5(D2)
#define DIO 3                  // Arduino Nano Pin6(D3)

const int pinLED = 4;           // LED output D4
const int pinButton = 5;      // Switch input D5

#define DHTPIN 6              // Temp Humidy sensor input D6

// Uncomment whatever type you're using!
//#define DHTTYPE DHT11       // DHT 11
#define DHTTYPE DHT22          // DHT 22 (AM2302), AM2321
//#define DHTTYPE DHT21       // DHT 21 (AM2301)

// Connect pin 1 (on the left) of the sensor to +5V
// NOTE: If using a board with 3.3V logic like an Arduino Due connect pin 1
// to 3.3V instead of 5V!
// Connect pin 2 of the sensor to whatever your DHTPIN is
// Connect pin 4 (on the right) of the sensor to GROUND
// Connect a 10K resistor from pin 2 (data) to pin 1 (power) of the sensor

// Initialize DHT sensor.
// Note that older versions of this library took an optional third parameter to
// tweak the timings for faster processors.  This parameter is no longer needed
// as the current DHT reading algorithm adjusts itself to work on faster procs.
DHT dht(DHTPIN, DHTTYPE);

const uint8_t SEG_DONE[] = {                                           //'donE'
      SEG_B | SEG_C | SEG_D | SEG_E | SEG_G,                 // d
      SEG_A | SEG_B | SEG_C | SEG_D | SEG_E | SEG_F,   // O
      SEG_C | SEG_E | SEG_G,                                              // n
      SEG_A | SEG_D | SEG_E | SEG_F | SEG_G                 // E
      };

const uint8_t SEG_ON[] = {                                              // '__on'
      0,  0,                                                                               // 2 banlks
      SEG_C | SEG_D | SEG_E | SEG_G,                              // o
      SEG_C | SEG_E | SEG_G                                              // n
      };

const uint8_t SEG_OFF[] = {                                             // '_oFF'
      0,                                                                                    // 1 blank
      SEG_C | SEG_D | SEG_E | SEG_G,                              // o
      SEG_A | SEG_E | SEG_F | SEG_G,                              // F
      SEG_A | SEG_E | SEG_F | SEG_G                               // F
      };

const uint8_t SEG_ERR[] = {                                            // '_Err'
      0,                                                                                   // 1 balnk
      SEG_A | SEG_D | SEG_E | SEG_F | SEG_G,              // E
      SEG_E | SEG_G,                                                          // r
      SEG_E | SEG_G                                                           // r
      };

TM1637Display display(CLK, DIO);

// The amount of time (in milliseconds) between tests
#define TEST_DELAY 2000                                           // delay 2sec

void setup()
{
  pinMode(pinLED, OUTPUT);       // Init LED output
  pinMode(pinButton, INPUT);      // init SW input

  Serial.begin(9600);                       // init serial port
  Serial.println(F("Cup Temp!"));   // send starting msg to pc

  dht.begin();                                   // init temperature sensor
}

void loop() {
  int k;
  uint8_t data[] = { 0xff, 0xff, 0xff, 0xff };            // Data to turn on all segment
  uint8_t blank[] = { 0x00, 0x00, 0x00, 0x00 };   // Data to turn off all segment
  display.setBrightness(0x0f);                            // max brightness

  int ih;
  int it;

  // All segments on
  display.setSegments(data);          // turn on all seg.
  delay(TEST_DELAY);                      // dly
  display.setSegments(blank);        // turn off allseg.
  delay(TEST_DELAY);                      // dly

  while (1) {                                        // endlerss loop

    digitalWrite(pinLED, HIGH);       // LED on
    // Reading temperature or humidity takes about 250 milliseconds!
    // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
    float h = dht.readHumidity();
    // Read temperature as Celsius (the default)
    float t = dht.readTemperature();
    // Read temperature as Fahrenheit (isFahrenheit = true)
    float f = dht.readTemperature(true);
    digitalWrite(pinLED, LOW);        // LED off

    // Check if any reads failed and exit early (to try again).
    if (isnan(h) || isnan(t) || isnan(f)) {                                   // on error
      Serial.println(F("Failed to read from DHT sensor!")); // send error msg via serial port
      display.setSegments(SEG_ERR);                                  // display error msg on FND
      //return;
    }
    else {
      // Compute heat index in Fahrenheit (the default)
      float hif = dht.computeHeatIndex(f, h);
      // Compute heat index in Celsius (isFahreheit = false)
      float hic = dht.computeHeatIndex(t, h, false);

      Serial.print(F("Humidity: "));            // send Temp. Humidy. to PC
      Serial.print(h);
      Serial.print(F("%  Temperature: "));
      Serial.print(t);
      Serial.print(F("°C "));
      Serial.print(f);
      Serial.print(F("°F  Heat index: "));
      Serial.print(hic);
      Serial.print(F("°C "));
      Serial.print(hif);
      Serial.println(F("°F"));

      ih = h * 10;                                             // convert floating point value into interger
      it = t * 10;

      if(digitalRead(pinButton)) {                                // if sw pressed
        display.showNumberDecEx(ih, 0x20, false); // then display humidity
        delay(50);                                                            // 50ms dly
      }
      else {                                                                      // nomaly
        display.showNumberDecEx(it, 0x20, false); // display Temperature
        delay(50);                                                           // 50ms dly
      }
    }
  }
}