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 Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz 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 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 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 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz 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 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 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 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 207th prestosilver 🇺🇸 885 52 2ms 17 days ago 207th balloffur 885 52 2ms 2 days ago 228th AbhayAravinda 868 53 1ms 26 Jul 2020 228th neihousaigaai 868 53 1ms 8 May 2021 228th mohakkhowal 868 53 2ms 30 May 2021 228th puyuliao 868 53 1ms 26 Jul 2021 228th Bubbler-4 868 53 1ms 3 Nov 2021 228th c0d3-4-F00d 🇩🇪 868 53 5ms 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836 55 2ms 12 Mar 2019 258th AkashTandon167 836 55 1ms 25 Sep 2019 258th AasiApina 836 55 1ms 28 Jan 2020 258th minarjos 836 55 2ms 12 Jan 2021 258th rak1507 🇬🇧 836 55 1ms 1 Feb 2021 258th boxjelly 836 55 2ms 15 Feb 2021 258th ktiy 836 55 1ms 19 Apr 2021 258th starxingchenc 836 55 1ms 3 Jul 2021 258th blasio99 836 55 1ms 2 Nov 2021 258th rick-gnous 836 55 1ms 5 Nov 2021 258th LorenzoDeGaspari 836 55 2ms 20 Jun 2022 258th AnnoyedArt1256 836 55 1ms 19 Aug 2022 258th ndren 836 55 1ms 6 Aug 2023 258th triedel42 836 55 1ms 15 May 2024 258th LHLaurini 🇧🇷 836 55 1ms 30 Jun 2024 258th Mabeloid 🇳🇴 836 55 2ms 23 Oct 2025 274th alexjlaberge 821 56 1ms 8 Mar 2019 274th serenac26 821 56 1ms 2 May 2019 274th shuding 821 56 1ms 12 May 2020 274th ytaki0801 🇯🇵 821 56 1ms 19 Jun 2021 274th jgbaldwinbrown 821 56 1ms 2 Jul 2021 274th ACMichels 821 56 1ms 13 Aug 2021 274th LordAzyks 🇫🇷 821 56 1ms 30 Jun 2022 274th MCausc78 🇺🇦 821 56 1ms 5 Jan 2023 274th aevykt 821 56 1ms 29 Oct 2023 274th DevinJFarmer 821 56 1ms 29 Oct 2023 274th ashtraypettingzoo 🇺🇸 821 56 1ms 19 Mar 2024 274th 2022dyx 821 56 2ms 19 Jul 2024 274th madeforlosers 821 56 2ms 22 Nov 2024 274th desecaw13 821 56 2ms 24 Jan 2025 274th Emutis 🇱🇹 821 56 2ms 16 Aug 2025 274th ApoChagi 821 56 1ms 21 Oct 2025 274th deglebe 821 56 2ms 3 Nov 2025 291st ahenningsen 807 57 1ms 5 May 2019 291st ieeemma 807 57 2ms 30 Apr 2020 291st agrukuki 807 57 1ms 20 Sep 2020 291st ngocbd 🇻🇳 807 57 1ms 25 Sep 2020 291st iznax 807 57 1ms 16 Oct 2020 291st b-paul 807 57 1ms 25 Dec 2020 291st TheHammerBro 807 57 1ms 30 Apr 2021 291st shibacho 🇯🇵 807 57 1ms 18 Mar 2022 291st AndreaNeti 807 57 3ms 16 Jun 2022 291st menezesd 807 57 2ms 1 Dec 2022 First Prev 226–300 of 590 Next Last