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 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 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 287th Jigglypuffed 807 57 2ms 15 Jul 2025 287th KAKISKA-code 🇫🇮 807 57 2ms 24 Sep 2025 287th FortuiteMan 🇫🇷 807 57 2ms 2 days ago 304th MadMax129 793 58 1ms 25 Dec 2019 304th bastienvoirin 🇫🇷 793 58 2ms 24 Apr 2020 304th iddoroshenko 793 58 2ms 27 Jul 2020 304th LexouDuck 793 58 2ms 24 Oct 2020 304th KatieLG 🇬🇧 793 58 2ms 19 Jun 2021 304th AIn0n 793 58 2ms 11 Jul 2021 304th garrisonhh 793 58 2ms 15 Aug 2021 304th bakaq 793 58 2ms 9 Nov 2021 304th MichalMarsalek 🇨🇿 793 58 2ms 18 Aug 2022 304th Baxi-codes 793 58 2ms 25 Dec 2022 304th kallmi28 🇨🇿 793 58 2ms 20 Oct 2023 304th Maximizer02 793 58 2ms 1 Mar 2024 316th archee303 780 59 2ms 5 Feb 2020 316th SubsTheTechnomancer 780 59 2ms 22 Apr 2021 316th matricronia 780 59 2ms 27 May 2021 316th kayahr 780 59 2ms 18 Jun 2021 316th wansacis 🇩🇪 780 59 2ms 20 Aug 2021 316th VictorChemin 🇫🇷 780 59 2ms 24 Nov 2021 316th aguyon1 780 59 2ms 17 Jun 2023 316th 1231234md5 🇨🇳 780 59 3ms 20 Jan 2024 316th yuchuehw 780 59 2ms 6 Jun 2024 316th xyangst 780 59 2ms 15 Oct 2024 316th Maashau 780 59 2ms 35 hours ago 327th shaneliu-zf 🇹🇼 767 60 2ms 6 Jul 2020 327th pkasting 767 60 2ms 6 Sep 2020 327th heypwesto 🇳🇿 767 60 2ms 20 Apr 2021 327th lesserfish 767 60 1ms 7 May 2021 327th Waterperry 767 60 2ms 2 Nov 2021 327th lemogne 767 60 2ms 13 Nov 2021 327th ClementCarre-BionomeeX 767 60 4ms 17 Nov 2021 327th stellartux 767 60 2ms 24 Dec 2023 327th kasarino 767 60 2ms 2 days ago 336th dc03 754 61 2ms 13 Sep 2020 336th Non-J 754 61 2ms 27 Sep 2020 336th isaiah0311 754 61 2ms 16 Feb 2023 336th inverseLorentz 🇦🇺 754 61 2ms 12 Oct 2023 336th logvp 754 61 1ms 1 Feb 2024 336th wh3n3v3r 🇨🇿 754 61 2ms 15 Nov 2024 336th mttcrn 754 61 2ms 22 Mar 2025 343rd uier 742 62 2ms 28 Dec 2019 343rd jakingy 742 62 2ms 8 Jul 2020 343rd aliakseikalosha 742 62 2ms 25 Apr 2021 343rd rchalamala 742 62 2ms 7 Aug 2021 343rd Omega65536 🇩🇪 742 62 2ms 8 Jul 2022 343rd TheRealOhead 🇺🇸 742 62 2ms 28 Nov 2022 343rd n8pjl 742 62 2ms 29 Oct 2023 343rd h-hh-hhh 🇺🇦 742 62 2ms 2 Nov 2024 343rd andrewjc2000 742 62 2ms 7 Mar 2025 343rd matejmatik123 🇸🇰 742 62 2ms 27 Jun 2025 343rd gigaprofisi 🇺🇸 742 62 2ms 15 days ago 354th Tilka 730 63 2ms 3 May 2021 354th petreleon 730 63 2ms 20 Oct 2021 354th heabr12 730 63 2ms 6 Sep 2024 357th lukasmoellerch 719 64 2ms 3 May 2021 357th bijlpieter 719 64 2ms 19 Nov 2021 357th BruceMcRooster 719 64 2ms 25 Mar 2022 357th 201170 719 64 2ms 29 Jul 2022 357th H3Rol4x 719 64 2ms 5 Jan 2023 357th galloj 🇨🇿 719 64 2ms 7 Feb 2023 357th elektricM 719 64 2ms 22 Sep 2023 357th jacekwladzinski 719 64 2ms 2 Oct 2025 357th GodlyProgrammer1 719 64 2ms 16 days ago 366th Batzuga 708 65 2ms 10 Sep 2019 366th loooph 708 65 2ms 2 Aug 2020 366th CaraCompSci 708 65 2ms 10 Oct 2020 366th b10011 🇫🇮 708 65 2ms 3 Jan 2023 366th calinous 🇷🇴 708 65 2ms 27 Feb 2023 366th rifatx 708 65 2ms 24 Jul 2024 366th mhgockel 708 65 2ms 21 Jun 2025 373rd citsur 697 66 2ms 1 Jun 2019 373rd generot 🇧🇬 697 66 2ms 9 Apr 2020 373rd resetcentral 697 66 2ms 22 May 2022 First Prev 301–375 of 568 Next Last