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 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 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 Numbrix 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 ArkScript 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 ArkScript 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 Calendar 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 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 Numbrix 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 477th dpethes 561 82 2ms 9 Jan 2024 477th PyryL 🇫🇮 561 82 2ms 23 Aug 2024 477th jorbDehmel 🇺🇸 561 82 1ms 20 Sep 2024 484th PeriBooty 554 83 11ms 26 Nov 2019 484th Smetalo 554 83 1ms 25 Aug 2022 484th Qruintrox 554 83 2ms 24 Jun 2023 487th phpboyscout 548 84 2ms 26 May 2021 487th OttscoMC 548 84 1ms 18 Jun 2021 487th ANovelForStudy 548 84 1ms 9 Jun 2023 487th fkantelberg 548 84 2ms 15 Jul 2023 487th sbercx 548 84 11ms 29 Jul 2023 492nd mxwli 541 85 1ms 16 May 2021 492nd Kasci 541 85 2ms 7 Dec 2021 492nd stonethurg 541 85 2ms 14 Feb 2023 492nd VictorFordham 541 85 1ms 4 Mar 2023 492nd ilovapples 541 85 2ms 9 Jun 2025 497th drkameleon 🇪🇸 535 86 10ms 28 Jan 2020 497th ms-tingliang 535 86 2ms 6 Aug 2022 497th AZ9tumas 535 86 2ms 15 Oct 2022 497th GWStuart 535 86 2ms 15 Sep 2023 497th Giantnoodlemonster 535 86 2ms 15 Sep 2024 497th BlueGummi 535 86 11ms 15 Apr 2025 503rd vonKrafft 529 87 2ms 25 Mar 2020 503rd tm70 529 87 11ms 23 Jan 2021 503rd ArianKG 529 87 1ms 21 Mar 2024 506th ottsco7697 523 88 1ms 3 Jul 2019 506th RustemB 🇷🇺 523 88 1ms 25 Aug 2020 506th TerenceTux 523 88 1ms 6 Jun 2023 506th BpbjsGreen 🇨🇳 523 88 1ms 7 Jul 2024 506th kurkale6ka 523 88 2ms 15 Aug 2024 511th ryguyNelson 517 89 1ms 12 Aug 2020 511th mhenion8293 🇺🇸 517 89 2ms 5 Jun 2021 511th ze-h 🇺🇸 517 89 1ms 19 Feb 2022 511th S-Ruban 517 89 1ms 26 Feb 2023 511th uncertaain 517 89 1ms 28 Dec 2023 511th tik25 517 89 1ms 28 Mar 2024 511th iilegacyyii 517 89 7ms 20 Jan 2025 518th humz2k 511 90 1ms 26 Sep 2022 518th Jaro32768 🇸🇰 511 90 1ms 20 Sep 2023 520th Verlio-H 505 91 2ms 17 Feb 2025 521st lilyyy411 500 92 1ms 10 Sep 2021 521st bryanmytko 500 92 14ms 5 Jul 2022 521st 104210 500 92 2ms 14 Sep 2022 521st DrPiranoid 500 92 1ms 22 Sep 2022 525th sm1lko 495 93 2ms 7 Dec 2022 525th aDwarfNamedUrist 495 93 11ms 12 Jul 2023 525th Sephirem98 495 93 1ms 24 Oct 2023 525th Unknownuserfrommars 495 93 1ms 20 Nov 2024 525th 0xA00 495 93 11ms 4 Dec 2025 530th ArturLukianov 489 94 1ms 10 Aug 2020 530th Mortis66666 489 94 2ms 27 May 2022 530th PeytonNowlin 489 94 2ms 9 Oct 2025 533rd abailey2020 🇺🇸 484 95 2ms 3 Oct 2020 533rd lemmaandrew 484 95 2ms 23 Jan 2021 533rd zt14427 484 95 1ms 28 Feb 2023 533rd epic-programmer-guy 484 95 2ms 17 Dec 2023 533rd MID246 484 95 2ms 14 Nov 2024 538th dmoa 479 96 2ms 21 Mar 2021 538th shagunsingh30 479 96 1ms 2 Apr 2022 540th nico-bachner 474 97 2ms 28 Dec 2020 540th atazzam 🇺🇸 474 97 1ms 2 Sep 2022 542nd GnotAGnelf 469 98 2ms 24 Nov 2020 542nd kennyhow 469 98 1ms 27 Jan 2021 542nd Robbe7730 469 98 1ms 17 Nov 2021 545th azure-blondon 460 100 2ms 18 Aug 2024 546th aaronze 🇦🇺 455 101 1ms 29 Apr 2021 546th NovemberOrWhatever 455 101 2ms 6 Nov 2022 548th 4ndyJ 🇬🇧 451 102 2ms 17 Dec 2022 549th cgjohannsen 447 103 2ms 10 Jun 2022 550th 52525rr 442 104 1ms 20 Oct 2025 551st MisterrLuck 438 105 1ms 11 Sep 2023 552nd adoxography 434 106 11ms 3 Oct 2019 552nd siddharth2411 434 106 1ms 22 Mar 2020 554th MunibullahShah 426 108 2ms 31 Aug 2019 555th george1605 422 109 2ms 14 Feb 2023 556th Zach1031 418 110 2ms 15 Nov 2025 557th barbu110 407 113 13ms 2 Dec 2019 558th JesseNoEyes 🇺🇸 400 115 2ms 4 Oct 2024 559th milliorn 393 117 2ms 9 Feb 2020 559th plainoldcheese 🇦🇶 393 117 2ms 23 Mar 2023 First Prev 481–560 of 595 Next Last