I would like to make my code better please help me improve it. Note that it runs just fine 😀 main.cpp

#include <SFML/Graphics.hpp> #include "counter.hpp"  std::string day(int num) { return (num!=1)? "s":""; } //the 's' in the word day(s) in the text displayed  int main() {     sf::RenderWindow window(sf::VideoMode(800,300), "New Year Counter");     window.setVerticalSyncEnabled(true);     window.setPosition(sf::Vector2i(sf::VideoMode::getDesktopMode().width/2 -400, sf::VideoMode::getDesktopMode().height/2 -150)); //put window in the middle of the screen      sf::Font font;     font.loadFromFile("Beyond Wonderland.ttf");     sf::Text text;     text.setFont(font);     text.setCharacterSize(80);     text.setFillColor(sf::Color::White);     text.move(25, 10);      sf::Text counter = text; //initialize with the same attributes as text so that I won't have to write everything again.      while(window.isOpen())     {         sf::Event event;         while(window.pollEvent(event))         {             if(event.type == sf::Event::Closed)                 window.close();         }                TimeToNewYear year;         window.clear(sf::Color::Black);         text.setString("Until New Year "+year.get_newYear()+"\n"+year.get_daysLeft()+" day"+day(std::stoi(year.get_daysLeft()))+" left\n\t\tand");         window.draw(text);         counter.setString(year.get_counter());         counter.setCharacterSize(120);         counter.setPosition(360, 140);         window.draw(counter);         window.display();     } } 

counter.hpp

#ifndef COUNTER_HPP #define COUNTER_HPP #include <string> #include <ctime>  class TimeToNewYear { private:     time_t m_nowTime = time(0);     time_t m_tmny; //for mktime (time new year)     tm *m_locTime = localtime(&m_nowTime);     tm m_newYear {};     int m_timeLeft;     int m_daysLeft;     std::string m_counter;      void addNum(int num) //to display single digits with a 0 ex: 03     {         if(num<=9)             m_counter += "0";         m_counter += std::to_string(num);     } public:     TimeToNewYear()     {          m_newYear.tm_mday =1;          m_newYear.tm_year = 1+ m_locTime->tm_year; //set m_newYear         m_tmny = mktime(&m_newYear);         m_timeLeft = difftime(m_tmny, m_nowTime);         //calculate days left         m_daysLeft = m_timeLeft/(24*3600);         m_timeLeft %= 24*3600;     }      std::string get_daysLeft() const { return std::to_string(m_daysLeft); }     std::string get_newYear()  const { return std::to_string(m_newYear.tm_year +1900); } //tm_year is the years from 1900     std::string get_counter()     {         addNum(m_timeLeft/3600);         m_counter += ":";         m_timeLeft %= 3600;         addNum(m_timeLeft/60);         m_counter += ":";         addNum(m_timeLeft%60);         return m_counter;     } };  #endif 

Especially with the way I use sfml I need lots of guidance since I’ve just started learning how to use this library. I’m still learning C++ as well.