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 448th muztanger 590 78 2ms 1 Jan 2021 448th 444nuits 590 78 13ms 31 Jan 2022 448th junten1 590 78 2ms 18 Oct 2024 454th davidgblanes 582 79 2ms 22 Sep 2019 454th SiBeepBoop 582 79 17ms 14 Apr 2025 456th volpi-m 🇫🇷 575 80 2ms 30 Aug 2020 456th denballakh 575 80 2ms 25 Nov 2021 456th Adix-null 🇱🇹 575 80 2ms 4 Jul 2023 456th StupidHobbit 575 80 2ms 12 days ago 460th NJRist 🇺🇸 568 81 3ms 24 Nov 2022 460th s-gannon 568 81 12ms 3 May 2023 462nd markus-rekdal 561 82 12ms 4 Jun 2019 462nd stdstijn 561 82 2ms 10 May 2020 462nd Adrien-AM 561 82 18ms 31 Jan 2022 462nd CameronGBell 561 82 2ms 10 Nov 2022 462nd dpethes 561 82 2ms 9 Jan 2024 462nd PyryL 🇫🇮 561 82 2ms 23 Aug 2024 462nd jorbDehmel 🇺🇸 561 82 2ms 20 Sep 2024 469th PeriBooty 554 83 12ms 26 Nov 2019 469th Smetalo 554 83 2ms 25 Aug 2022 469th Qruintrox 554 83 2ms 24 Jun 2023 472nd phpboyscout 548 84 2ms 26 May 2021 472nd ANovelForStudy 548 84 2ms 9 Jun 2023 472nd fkantelberg 548 84 2ms 15 Jul 2023 472nd sbercx 548 84 11ms 29 Jul 2023 476th mxwli 541 85 2ms 16 May 2021 476th stonethurg 541 85 2ms 14 Feb 2023 476th VictorFordham 541 85 2ms 4 Mar 2023 476th ilovapples 541 85 2ms 9 Jun 2025 480th drkameleon 🇪🇸 535 86 10ms 28 Jan 2020 480th ms-tingliang 535 86 2ms 6 Aug 2022 480th AZ9tumas 535 86 2ms 15 Oct 2022 480th GWStuart 535 86 2ms 15 Sep 2023 480th Giantnoodlemonster 535 86 2ms 15 Sep 2024 480th BlueGummi 535 86 12ms 15 Apr 2025 486th vonKrafft 529 87 3ms 25 Mar 2020 486th tm70 529 87 11ms 23 Jan 2021 486th ArianKG 529 87 2ms 21 Mar 2024 489th ottsco7697 523 88 2ms 3 Jul 2019 489th TerenceTux 523 88 2ms 6 Jun 2023 489th BpbjsGreen 🇨🇳 523 88 2ms 7 Jul 2024 489th kurkale6ka 523 88 2ms 15 Aug 2024 493rd ryguyNelson 517 89 5ms 12 Aug 2020 493rd ze-h 🇺🇸 517 89 2ms 19 Feb 2022 493rd S-Ruban 517 89 2ms 26 Feb 2023 493rd uncertaain 517 89 2ms 28 Dec 2023 493rd tik25 517 89 2ms 28 Mar 2024 493rd iilegacyyii 517 89 9ms 20 Jan 2025 499th humz2k 511 90 2ms 26 Sep 2022 499th Jaro32768 🇸🇰 511 90 3ms 20 Sep 2023 501st Verlio-H 505 91 2ms 17 Feb 2025 502nd bryanmytko 500 92 12ms 5 Jul 2022 502nd DrPiranoid 500 92 2ms 22 Sep 2022 504th sm1lko 495 93 1ms 7 Dec 2022 504th aDwarfNamedUrist 495 93 13ms 12 Jul 2023 504th Sephirem98 495 93 2ms 24 Oct 2023 504th Unknownuserfrommars 495 93 2ms 20 Nov 2024 504th 0xA00 495 93 11ms 3 days ago 509th ArturLukianov 489 94 3ms 10 Aug 2020 509th Mortis66666 489 94 2ms 27 May 2022 509th PeytonNowlin 489 94 2ms 9 Oct 2025 512th abailey2020 🇺🇸 484 95 2ms 3 Oct 2020 512th lemmaandrew 484 95 2ms 23 Jan 2021 512th zt14427 484 95 2ms 28 Feb 2023 512th epic-programmer-guy 484 95 2ms 17 Dec 2023 512th MID246 484 95 2ms 14 Nov 2024 517th shagunsingh30 479 96 2ms 2 Apr 2022 518th nico-bachner 474 97 2ms 28 Dec 2020 518th atazzam 🇺🇸 474 97 2ms 2 Sep 2022 520th GnotAGnelf 469 98 2ms 24 Nov 2020 520th kennyhow 469 98 2ms 27 Jan 2021 520th Robbe7730 469 98 2ms 17 Nov 2021 523rd azure-blondon 460 100 2ms 18 Aug 2024 524th aaronze 🇦🇺 455 101 2ms 29 Apr 2021 525th 4ndyJ 🇬🇧 451 102 2ms 17 Dec 2022 First Prev 451–525 of 571 Next Last