what is euler fr?

This repository contains solutions to Project Euler, a series of challenging math and programming puzzles that test your problem-solving skills. Project Euler is a famous online platform where people from all backgrounds tackle increasingly difficult mathematical problems by writing code to find the answers. The repo is essentially a collection of C++ programs, each one solving a different Euler problem. Rather than providing detailed walkthroughs, the code here demonstrates working implementations, so if you're stuck on a problem, you can study how someone approached it. The problems typically start simple (like finding the sum of all even Fibonacci numbers below a certain value) and gradually become more complex, requiring deeper mathematical insight or clever algorithms to run efficiently. This kind of repository is useful for several audiences. If you're learning to code and want practice with real problem-solving, Project Euler problems are a great way to sharpen your skills in a structured way. If you're preparing for technical interviews, these problems build algorithmic thinking. And if you've already solved some Euler problems yourself, you might browse others' solutions to see different coding styles or more elegant approaches than your own. The README here is quite minimal, so the real value is in reading through the actual C++ code files themselves. Each solution likely tackles a specific problem number, so you can either follow along sequentially (starting with problem 1) or jump to whichever puzzles interest you most. The code is meant to be studied and learned from rather than just copied, the goal of Project Euler itself is to develop your own problem-solving ability.