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 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 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 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 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 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 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 316th KatieLG 🇬🇧 793 58 2ms 19 Jun 2021 316th AIn0n 793 58 2ms 11 Jul 2021 316th garrisonhh 793 58 2ms 15 Aug 2021 316th bakaq 793 58 1ms 9 Nov 2021 316th MichalMarsalek 🇨🇿 793 58 1ms 18 Aug 2022 316th Baxi-codes 793 58 1ms 25 Dec 2022 316th kallmi28 🇨🇿 793 58 2ms 20 Oct 2023 316th Maximizer02 793 58 2ms 1 Mar 2024 316th kellantech 793 58 2ms 16 Dec 2025 316th kasarino 793 58 2ms 7 days ago 331st archee303 780 59 1ms 5 Feb 2020 331st SubsTheTechnomancer 780 59 1ms 22 Apr 2021 331st kayahr 780 59 2ms 18 Jun 2021 331st wansacis 🇩🇪 780 59 2ms 20 Aug 2021 331st VictorChemin 🇫🇷 780 59 1ms 24 Nov 2021 331st aguyon1 780 59 1ms 17 Jun 2023 331st 1231234md5 🇨🇳 780 59 1ms 20 Jan 2024 331st yuchuehw 780 59 2ms 6 Jun 2024 331st xyangst 780 59 2ms 15 Oct 2024 331st Maashau 780 59 2ms 29 Nov 2025 331st bitsandbeyond 🇳🇱 780 59 1ms 23 days ago 331st isaiah0311 🇺🇸 780 59 2ms 9 days ago 343rd shaneliu-zf 🇹🇼 767 60 1ms 6 Jul 2020 343rd pkasting 767 60 2ms 6 Sep 2020 343rd heypwesto 🇳🇿 767 60 1ms 20 Apr 2021 343rd lesserfish 767 60 2ms 7 May 2021 343rd Waterperry 767 60 1ms 2 Nov 2021 343rd lemogne 767 60 1ms 13 Nov 2021 343rd ClementCarre-BionomeeX 767 60 1ms 17 Nov 2021 343rd stellartux 767 60 1ms 24 Dec 2023 343rd lhulinsky 767 60 2ms 4 days ago 352nd dc03 754 61 2ms 13 Sep 2020 352nd Non-J 754 61 1ms 27 Sep 2020 352nd inverseLorentz 🇦🇺 754 61 1ms 12 Oct 2023 352nd logvp 754 61 1ms 1 Feb 2024 352nd wh3n3v3r 🇨🇿 754 61 1ms 15 Nov 2024 352nd mttcrn 754 61 3ms 22 Mar 2025 358th uier 742 62 1ms 28 Dec 2019 358th jakingy 742 62 1ms 8 Jul 2020 358th aliakseikalosha 742 62 1ms 25 Apr 2021 358th rchalamala 742 62 1ms 7 Aug 2021 358th Omega65536 🇩🇪 742 62 1ms 8 Jul 2022 358th TheRealOhead 🇺🇸 742 62 1ms 28 Nov 2022 358th n8pjl 742 62 2ms 29 Oct 2023 358th h-hh-hhh 🇺🇦 742 62 1ms 2 Nov 2024 358th andrewjc2000 742 62 2ms 7 Mar 2025 358th matejmatik123 🇸🇰 742 62 2ms 27 Jun 2025 358th gigaprofisi 🇺🇸 742 62 2ms 15 Nov 2025 369th Tilka 730 63 2ms 3 May 2021 369th petreleon 730 63 4ms 20 Oct 2021 369th heabr12 730 63 1ms 6 Sep 2024 369th bpharaldsson 730 63 2ms 4 hours ago 373rd lukasmoellerch 719 64 2ms 3 May 2021 373rd bijlpieter 719 64 2ms 19 Nov 2021 373rd BruceMcRooster 719 64 2ms 25 Mar 2022 373rd 201170 719 64 1ms 29 Jul 2022 373rd H3Rol4x 719 64 1ms 5 Jan 2023 373rd galloj 🇨🇿 719 64 2ms 7 Feb 2023 373rd elektricM 719 64 1ms 22 Sep 2023 373rd jacekwladzinski 719 64 1ms 2 Oct 2025 373rd GodlyProgrammer1 719 64 2ms 15 Nov 2025 382nd Batzuga 708 65 1ms 10 Sep 2019 382nd rosvik 🇳🇴 708 65 1ms 29 Apr 2020 382nd loooph 708 65 1ms 2 Aug 2020 382nd tfkls 708 65 2ms 18 Aug 2020 382nd CaraCompSci 708 65 2ms 10 Oct 2020 382nd sech1p 🇵🇱 708 65 2ms 30 Oct 2021 382nd b10011 🇫🇮 708 65 2ms 3 Jan 2023 382nd calinous 🇷🇴 708 65 1ms 27 Feb 2023 382nd rifatx 708 65 1ms 24 Jul 2024 382nd mhgockel 708 65 1ms 21 Jun 2025 392nd citsur 697 66 1ms 1 Jun 2019 392nd generot 🇧🇬 697 66 2ms 9 Apr 2020 392nd resetcentral 697 66 2ms 22 May 2022 392nd destofr 697 66 2ms 23 Aug 2022 392nd piano-miles 697 66 2ms 30 Mar 2023 392nd mikiymk 697 66 2ms 21 Sep 2023 392nd feherd 697 66 2ms 16 Nov 2023 392nd Just4FunCoder 697 66 1ms 26 Aug 2024 392nd muser-logiccpu 🇺🇦 697 66 1ms 21 Aug 2025 First Prev 321–400 of 600 Next Last