Tasks not implemented in C
Awareness
If C is a language you like, or are interested in, please inform your fellow members of the C community; this page can't be emptied without your and their participation.
If C is a language you like, or are interested in, please inform your fellow members of the C community; this page can't be emptied without your and their participation.
Tasks not implemented in C
A
- ADFGVX cipher
- Abelian sandpile model/Identity
- Achilles numbers
- Almkvist-Giullera formula for pi
- Anadromes
- Anagram generator
- Anaprimes
- Animated Spinners
- Apéry's constant
- Associative array/Merging
- Autogram checker
B
- Babylonian spiral
- Bifid cipher
- Bioinformatics/Global alignment
- Boustrophedon transform
- Boyer-Moore string search
- Brilliant numbers
- Bron–Kerbosch algorithm
C
- Calkin-Wilf sequence
- Camel case and snake case
- Centre and radius of a circle passing through 3 points in a plane
- Check Machin-like formulas
- Church numerals
- Color wheel
- Colour pinstripe/Printer
- Commatizing numbers
- Compiler/Simple file inclusion pre processor
- Cullen and Woodall numbers
- Cycles of a permutation
- Cyclops numbers
- Cyclotomic polynomial
D
- Dating agency
- De Bruijn sequences
- Deming's funnel
- Determine sentence type
- Display an outline as a nested table
- Distance and Bearing
- Distribution of 0 digits in factorial series
- Dominoes
- Duffinian numbers
E
- Earliest difference between prime gaps
- Eertree
- Elementary cellular automaton/Infinite length
- Engel expansion
- Equal prime and composite sums
- Erdös-Selfridge categorization of primes
- Euclid-Mullin sequence
- Euclidean rhythm
- Execute Computer/Zero
- Exponential digital sums
- Exponentiation with infix operators in (or operating on) the base
F
- Faces from a mesh
- Factorial base numbers indexing permutations of a collection
- Factorial primes
- Factorize string into Lyndon words
- Fermat pseudoprimes
- Find Chess960 starting position identifier
- Find duplicate files
- Fixed length records
- French Republican calendar
- Functional coverage tree
G
- GSTrans string conversion
- Gaussian primes
- Giuga numbers
- Goldbach's comet
- Graph colouring
- Greatest prime dividing the n-th cubefree number
H
- HTTPS/Client-authenticated
- Harriss Spiral
- Hash join
- Hashtron inference
- Hex words
- Home primes
- Horse racing
I
- I'm a software engineer, get me out of here
- Idiomatically determine all the characters that can be used for symbols
- Inconsummate numbers in base 10
- Index finite lists of positive integers
- Inner classes
- Inventory sequence
- Isograms and heterograms
J
K
L
M
- Magic numbers
- Mastermind
- Mayan calendar
- Meissel–Mertens constant
- Merge and aggregate datasets
- Metallic ratios
- Minimal steps down to 1
- Minkowski question-mark function
- Modified random distribution
- Monads/Writer monad
- Multi-base primes
N
- Nested templated data
- Non-transitive dice
- Nonogram solver
- Numbers k such that the last letter of k is the same as the first letter of k+1
- Numbers which are not the sum of distinct squares
- Numerical and alphabetical suffixes
O
P
- P-Adic numbers, basic
- P-Adic square roots
- Palindromic primes in base 16
- Particle fountain
- Pell numbers
- Pentomino tiling
- Peripheral drift illusion
- Pinstripe/Printer
- Pisano period
- Playfair cipher
- Primes: n*2^m+1
Q
R
- Ramanujan primes/twins
- Ramanujan's constant
- Random sentence from book
- Rare numbers
- Repunit primes
- Rhonda numbers
- Riordan numbers
- Rosetta Code/Count examples
- Rosetta Code/Find bare lang tags
- Rosetta Code/Find unimplemented tasks
- Rosetta Code/Fix code tags
- Rosetta Code/Rank languages by number of users
- Round-robin tournament schedule
- Ruth-Aaron numbers
S
- Set right-adjacent bits
- Set, the card game
- Sierpinski square curve
- Sieve of Pritchard
- Simple turtle graphics
- Sisyphus sequence
- Sleeping Beauty problem
- Smallest number k such that k+2^m is composite for all m less than k
- Solve a Holy Knight's tour
- Solve a Hopido puzzle
- Solve a Numbrix puzzle
- Sorensen–Dice coefficient
- Sort an outline at every level
- Strassen's algorithm
- Sub-unit squares
- Suffixation of decimal numbers
- Super-Poulet numbers
- Sylvester's sequence
- Sync subtitles
- Syntax highlighting using Mediawiki formatting
T
- Transliterate English text using the Greek alphabet
- Tree datastructures
- Tree from nesting levels
- Tropical algebra overloading
- Tupper's self-referential formula
- Twelve statements
- Twin primes whose sum is square number
U
V
W
- War card game
- Wasteful, equidigital and frugal numbers
- Word ladder
- Word search
- Wordiff
- Worthwhile task shaving
Y
Z
Draft tasks not implemented in C
1
3
A
- ABC incremental counts
- Arithmetic coding/As a generalized change of radix
- Assertions in design by contract
- Audio alarm
- Audio frequency generator
- Audio overlap loop
B
- B-spline
- Base58Check encoding
- Binary coded decimal
- Bioinformatics/Subsequence
- Black box
- Blackjack strategy
- Brace expansion using ranges
- Brzozowski algebraic method
C
- CLI-based maze-game
- Carmichael lambda function
- Checksumcolor
- Chess player
- Code segment unload
- Collect and sort square numbers in ascending order from three lists
- Color separation
- Combinations with repetitions/Square digit chain
- Common list elements
- Compiler/Preprocessor
- Conjugate a Latin verb
- Continued fraction convergents
- Convert CSV records to TSV
- Count the coins/0-1
- Countdown
- Create an executable for a program in an interpreted language
- Create your own text control codes
- Cross compilation
- Curve that touches three points
D
- Decimal floating point number to binary
- Distinct palindromes within decimal numbers
- Divide a rectangle into a number of unequal triangles
- Doubly-linked list/Element removal
E
- Eisenstein primes
- Elevator simulation
- English cardinal anagrams
- Erdős–Woods numbers
- Even numbers which cannot be expressed as the sum of two twin primes
- Execute CopyPasta Language
- Extended Straddling Checkerboard
- External sort
F
- Factor-perfect numbers
- Fibonacci heap
- Fibonacci matrix-exponentiation
- Find URI in text
- Find first missing positive
- Find words which contain the most consonants
- Free polyominoes enumeration
G
- Generalised floating point addition
- Generalised floating point multiplication
- Generate random numbers without repeating a value
- Geohash
- Geometric algebra
- Goodstein Sequence
- Gradient descent
- Greed
H
I
J
K
L
- L-system
- Lagrange Interpolation
- Latin Squares in reduced form/Randomizing using Jacobson and Matthews' technique
- Launch rocket with countdown and acceleration in stdout
- Longest palindromic substrings
- Lucas-Carmichael numbers
- Lunar arithmetic
M
- Make a backup file
- Marching squares
- Markov chain text generator
- McNaughton-Yamada-Thompson algorithm
- Most frequent k chars distance
- Multidimensional Newton-Raphson method
- Multiton
N
- N-queens minimum and knights and bishops
- NYSIIS
- Names to numbers
- Neighbour primes
- Number triplets game
- Numbers whose count of divisors is prime
O
P
- Pandigital prime
- Parse EBNF
- Particle swarm optimization
- Penholodigital squares
- Penrose tiling
- Perceptron
- Permutations with some identical elements
- Polynomial derivative
- Polynomial synthetic division
- Posit numbers/decoding
- Posit numbers/encoding
- Positive decimal integers with the digit 1 occurring exactly twice
- Powerful numbers
- Practical numbers
- Price list behind API
- Prime numbers p for which the sum of primes less than or equal to p is prime
- Prime numbers which contain 123
- Prime triplets
- Prime words
- Primes which contain only one odd digit
- Primes with digits in nondecreasing order
- Print itself
- Process SMIL directives in XML data
- Protecting Memory Secrets
- Pseudorandom number generator image
Q
R
- Railway circuit
- Ramanujan primes
- Range modifications
- Raster bars
- Recursive descent parser generator
- Red black tree sort
- Resistance calculator
- Resistance network calculator
- Reverse the gender of a string
- Reverse the order of lines in a text file while preserving the contents of each line
- Rice coding
- Robots
- Roots of a cubic polynomial
- Rosetta Code/List authors of task descriptions
- Rosetta Code/Run examples
- Rosetta Code/Tasks without examples
S
- Safe mode
- Sanitize user input
- Segmentation fault protection
- Selection bias in clinical sciences
- Selective file copy
- Self-hosting compiler
- Separate the house number from the street name
- Shape-Machine
- Sierpinski curve
- Simulated optics experiment/Data analysis
- Simulated optics experiment/Simulator
- Smallest enclosing circle problem
- Smallest multiple
- Smallest numbers
- Solve a Rubik's cube
- Solve equations with substitution method
- Solve hanging lantern problem
- Solve triangle solitaire puzzle
- Solving coin problems
- Sort primes from list to a list
- Special pythagorean triplet
- Square root by hand
- Starting a web browser
- Statistics/Chi-squared distribution
- Sturmian word
- Substring primes
- Suffix tree
- Szymański's algorithm
T
- Tamagotchi emulator
- Terminal control/Restricted width positional input/No wrapping
- Terminal control/Restricted width positional input/With wrapping
- Text completion
- Text to HTML
- Time conventions and conversions
- Time-based one-time password algorithm
- Transportation problem
- Triangular numbers
U
- URL shortener
- Unicode polynomial equation
- Unique characters in each string
- Unit testing
- Uno (card game)
- Upside-down numbers
- Use a REST API
- User defined pipe and redirection operators
- Using a speech engine to highlight words
V
W
- Walsh matrix
- Waveform analysis/Doh ray me
- Waveform analysis/Top and tail
- Weather routing
- WebGL rotating F
- Word break problem
Tasks omitted from C
A
B
C
D
F
H
I
O
P
R
- Reflection/Get source
- Reflection/List methods
- Reflection/List properties
- Respond to an unknown method call
- Runtime evaluation
- Runtime evaluation/In an environment
S
T
V
End of List
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