Fibonacci in C in bytes. Achievements Cheevos Holes Languages Medals Miscellaneous All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Gray Code Decoder Gray Code Encoder Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Gray Code Decoder Gray Code Encoder Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 234th raphaelimahorn 868 53 1ms 3 Oct 2022 234th namcartoon06 868 53 2ms 30 Jun 2023 234th gussy420 868 53 1ms 28 Oct 2023 234th Szum123321 🇵🇱 868 53 1ms 25 Nov 2023 234th funnyboy-roks 868 53 2ms 14 Jun 2024 234th Mychecksdead 868 53 1ms 25 Jul 2024 234th NickTheEASDude 🇺🇸 868 53 2ms 29 Aug 2024 234th snyderek 🇺🇸 868 53 1ms 20 Jan 2025 234th ReterikHub 868 53 2ms 24 Apr 2025 234th camren-m 868 53 1ms 23 May 2025 234th arvidjonasson 868 53 2ms 7 Jun 2025 234th VeryHolyCheeeese 🇫🇮 868 53 2ms 25 Jun 2025 234th trinityy-7 868 53 2ms 7 Aug 2025 234th Matter1024 🇮🇳 868 53 2ms 39 hours ago 255th redstarrer 852 54 1ms 12 Jan 2021 255th rqberry 852 54 1ms 8 Mar 2023 255th kyokucyou 🇩🇪 852 54 1ms 13 Mar 2023 255th nishantc1527 852 54 1ms 5 Apr 2023 255th Garklein 🇨🇦 852 54 1ms 23 Oct 2023 255th Stockoh 🇫🇷 852 54 1ms 4 Nov 2024 255th heanyang1 852 54 1ms 22 Apr 2025 255th myirci 852 54 2ms 15 Jun 2025 255th blaztoma 🇱🇹 852 54 1ms 17 Aug 2025 255th Apataras 852 54 1ms 2 Sep 2025 255th Pyroan 852 54 2ms 11 days ago 266th rambox11 836 55 1ms 12 Mar 2019 266th AkashTandon167 836 55 1ms 25 Sep 2019 266th AasiApina 836 55 1ms 28 Jan 2020 266th minarjos 836 55 2ms 12 Jan 2021 266th rak1507 🇬🇧 836 55 1ms 1 Feb 2021 266th boxjelly 836 55 1ms 15 Feb 2021 266th ktiy 836 55 1ms 19 Apr 2021 266th starxingchenc 836 55 1ms 3 Jul 2021 266th blasio99 836 55 1ms 2 Nov 2021 266th rick-gnous 836 55 1ms 5 Nov 2021 266th LorenzoDeGaspari 836 55 2ms 20 Jun 2022 266th AnnoyedArt1256 836 55 1ms 19 Aug 2022 266th ndren 836 55 1ms 6 Aug 2023 266th triedel42 836 55 1ms 15 May 2024 266th LHLaurini 🇧🇷 836 55 1ms 30 Jun 2024 266th Mabeloid 🇳🇴 836 55 1ms 23 Oct 2025 282nd alexjlaberge 821 56 1ms 8 Mar 2019 282nd serenac26 821 56 1ms 2 May 2019 282nd shuding 821 56 1ms 12 May 2020 282nd ytaki0801 🇯🇵 821 56 1ms 19 Jun 2021 282nd jgbaldwinbrown 821 56 1ms 2 Jul 2021 282nd ACMichels 821 56 1ms 13 Aug 2021 282nd LordAzyks 🇫🇷 821 56 1ms 30 Jun 2022 282nd MCausc78 🇺🇦 821 56 1ms 5 Jan 2023 282nd aevykt 821 56 1ms 29 Oct 2023 282nd DevinJFarmer 821 56 1ms 29 Oct 2023 282nd ashtraypettingzoo 🇺🇸 821 56 1ms 19 Mar 2024 282nd 2022dyx 821 56 2ms 19 Jul 2024 282nd desecaw13 821 56 2ms 24 Jan 2025 282nd Emutis 🇱🇹 821 56 2ms 16 Aug 2025 282nd ApoChagi 821 56 1ms 21 Oct 2025 282nd deglebe 821 56 2ms 3 Nov 2025 282nd JOrE20 821 56 2ms 3 Feb 2026 299th ahenningsen 807 57 1ms 5 May 2019 299th ieeemma 807 57 1ms 30 Apr 2020 299th agrukuki 807 57 1ms 20 Sep 2020 299th ngocbd 🇻🇳 807 57 1ms 25 Sep 2020 299th iznax 807 57 1ms 16 Oct 2020 299th b-paul 807 57 1ms 25 Dec 2020 299th TheHammerBro 807 57 1ms 30 Apr 2021 299th shibacho 🇯🇵 807 57 1ms 18 Mar 2022 299th AndreaNeti 807 57 2ms 16 Jun 2022 299th menezesd 807 57 2ms 1 Dec 2022 299th Ripick 807 57 1ms 30 Apr 2023 299th imma-Spring 807 57 1ms 2 Nov 2023 299th rsgray 807 57 2ms 29 Dec 2023 299th loganmacdougall 🇨🇦 807 57 1ms 19 Jan 2024 299th jbjd 807 57 1ms 24 Feb 2024 299th Jigglypuffed 807 57 1ms 15 Jul 2025 299th KAKISKA-code 🇫🇮 807 57 1ms 24 Sep 2025 299th FortuiteMan 🇫🇷 807 57 2ms 28 Nov 2025 317th MadMax129 793 58 2ms 25 Dec 2019 317th bastienvoirin 🇫🇷 793 58 1ms 24 Apr 2020 317th iddoroshenko 793 58 1ms 27 Jul 2020 317th LexouDuck 793 58 1ms 24 Oct 2020 First 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