C impact and status on Exercism

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1752 mentors

C Track Management

This page provides the Exercism community with the information and tools needed to manage the C track.

Students

104,106

Submissions

1,079,331

Mentoring Discussions

8,241

The C track needs attention ⚠️

Building

Practice Exercises

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Practice Exercises are exercises designed to allow students to solve an arbitrary problem, with the aim of them making use of the concepts they have learned so far.

Synced primary repo: 728577af6fc94fcbe8b1de58a6853794a159415a (Updates should be instant)

Next goal: Implement 131 practice exercises. Find out more.

82 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

80,044

275,137 (avg. 3.4)

36,068 (45.1%)

20 (0.0%)

Leap

7,296

35,093 (avg. 4.8)

3,980 (54.6%)

218 (3.0%)

Difference of Squares

6,161

32,986 (avg. 5.4)

4,801 (77.9%)

394 (6.4%)

Grains

6,094

47,856 (avg. 7.9)

4,619 (75.8%)

507 (8.3%)

Resistor Color

7,367

49,223 (avg. 6.7)

3,786 (51.4%)

665 (9.0%)

Collatz Conjecture

1,603

8,861 (avg. 5.5)

1,341 (83.7%)

47 (2.9%)

Queen Attack

1,457

9,722 (avg. 6.7)

1,101 (75.6%)

52 (3.6%)

Darts

2,856

10,147 (avg. 3.6)

1,951 (68.3%)

84 (2.9%)

Resistor Color Duo

1,817

5,404 (avg. 3.0)

1,391 (76.6%)

27 (1.5%)

Hamming

5,240

25,880 (avg. 4.9)

4,206 (80.3%)

593 (11.3%)

Space Age

1,678

6,313 (avg. 3.8)

1,317 (78.5%)

32 (1.9%)

RNA Transcription

1,395

9,318 (avg. 6.7)

1,109 (79.5%)

51 (3.7%)

Binary

1,561

11,746 (avg. 7.5)

1,210 (77.5%)

62 (4.0%)

Eliud's Eggs

511

2,466 (avg. 4.8)

408 (79.8%)

8 (1.6%)

Two Fer

1,039

5,282 (avg. 5.1)

829 (79.8%)

17 (1.6%)

Raindrops

1,207

5,365 (avg. 4.4)

964 (79.9%)

26 (2.2%)

D&D Character

428

3,577 (avg. 8.4)

308 (72.0%)

14 (3.3%)

Perfect Numbers

740

3,390 (avg. 4.6)

570 (77.0%)

9 (1.2%)

High Scores

690

6,155 (avg. 8.9)

488 (70.7%)

20 (2.9%)

Pangram

1,648

8,685 (avg. 5.3)

1,250 (75.8%)

53 (3.2%)

Resistor Color Trio

1,285

6,907 (avg. 5.4)

945 (73.5%)

28 (2.2%)

Armstrong Numbers

20,740

112,158 (avg. 5.4)

8,432 (40.7%)

1,739 (8.4%)

Isogram

9,140

86,263 (avg. 9.4)

5,044 (55.2%)

1,421 (15.5%)

Binary Search

2,834

24,227 (avg. 8.5)

1,907 (67.3%)

205 (7.2%)

Robot Simulator

1,159

4,801 (avg. 4.1)

797 (68.8%)

50 (4.3%)

Gigasecond

1,587

3,554 (avg. 2.2)

1,188 (74.9%)

133 (8.4%)

Triangle

862

4,253 (avg. 4.9)

588 (68.2%)

13 (1.5%)

Luhn

763

8,287 (avg. 10.9)

507 (66.4%)

28 (3.7%)

Allergies

1,134

6,266 (avg. 5.5)

764 (67.4%)

53 (4.7%)

Complex Numbers

672

2,345 (avg. 3.5)

522 (77.7%)

4 (0.6%)

Sum of Multiples

788

4,107 (avg. 5.2)

547 (69.4%)

18 (2.3%)

Clock

1,107

8,578 (avg. 7.7)

681 (61.5%)

44 (4.0%)

Rotational Cipher

205

1,957 (avg. 9.5)

166 (81.0%)

6 (2.9%)

Sieve

993

5,452 (avg. 5.5)

721 (72.6%)

39 (3.9%)

Square Root

3,058

11,854 (avg. 3.9)

2,094 (68.5%)

215 (7.0%)

Reverse String

1,297

12,057 (avg. 9.3)

951 (73.3%)

40 (3.1%)

Nucleotide Count

972

6,883 (avg. 7.1)

723 (74.4%)

24 (2.5%)

Protein Translation

233

2,184 (avg. 9.4)

161 (69.1%)

2 (0.9%)

Beer Song

910

5,500 (avg. 6.0)

597 (65.6%)

116 (12.7%)

Prime Factors

536

1,816 (avg. 3.4)

376 (70.1%)

7 (1.3%)

Nth Prime

579

2,413 (avg. 4.2)

403 (69.6%)

8 (1.4%)

All Your Base

569

3,560 (avg. 6.3)

327 (57.5%)

11 (1.9%)

Yacht

148

1,485 (avg. 10.0)

109 (73.6%)

3 (2.0%)

Scrabble Score

634

2,787 (avg. 4.4)

505 (79.7%)

24 (3.8%)

Sublist

460

2,084 (avg. 4.5)

282 (61.3%)

11 (2.4%)

Kindergarten Garden

219

1,659 (avg. 7.6)

163 (74.4%)

3 (1.4%)

Spiral Matrix

160

1,462 (avg. 9.1)

99 (61.9%)

3 (1.9%)

Grade School

2,461

26,124 (avg. 10.6)

1,020 (41.4%)

166 (6.7%)

Rational Numbers

1,270

12,288 (avg. 9.7)

784 (61.7%)

86 (6.8%)

Circular Buffer

1,726

17,514 (avg. 10.1)

897 (52.0%)

105 (6.1%)

List Ops

1,380

10,481 (avg. 7.6)

760 (55.1%)

78 (5.7%)

Saddle Points

773

5,070 (avg. 6.6)

452 (58.5%)

36 (4.7%)

Phone Number

839

7,117 (avg. 8.5)

554 (66.0%)

49 (5.8%)

Pascal's Triangle

838

4,132 (avg. 4.9)

523 (62.4%)

38 (4.5%)

Acronym

2,122

10,076 (avg. 4.7)

1,419 (66.9%)

120 (5.7%)

Matching Brackets

821

3,091 (avg. 3.8)

566 (68.9%)

52 (6.3%)

Roman Numerals

1,013

18,740 (avg. 18.5)

670 (66.1%)

74 (7.3%)

Anagram

677

2,380 (avg. 3.5)

456 (67.4%)

15 (2.2%)

Bob

817

4,682 (avg. 5.7)

587 (71.8%)

21 (2.6%)

Secret Handshake

608

3,707 (avg. 6.1)

428 (70.4%)

16 (2.6%)

ETL

423

1,767 (avg. 4.2)

288 (68.1%)

8 (1.9%)

Series

542

2,342 (avg. 4.3)

354 (65.3%)

7 (1.3%)

Diamond

416

1,584 (avg. 3.8)

281 (67.5%)

7 (1.7%)

Minesweeper

437

2,094 (avg. 4.8)

267 (61.1%)

9 (2.1%)

Run-Length Encoding

397

2,232 (avg. 5.6)

245 (61.7%)

10 (2.5%)

Atbash Cipher

479

2,059 (avg. 4.3)

331 (69.1%)

33 (6.9%)

Pythagorean Triplet

1,017

5,406 (avg. 5.3)

509 (50.0%)

51 (5.0%)

Linked List

1,118

8,673 (avg. 7.8)

583 (52.1%)

83 (7.4%)

Word Count

1,662

4,622 (avg. 2.8)

780 (46.9%)

194 (11.7%)

Rail Fence Cipher

458

2,560 (avg. 5.6)

296 (64.6%)

9 (2.0%)

Meetup

717

1,524 (avg. 2.1)

394 (55.0%)

11 (1.5%)

Pig Latin

407

2,831 (avg. 7.0)

256 (62.9%)

10 (2.5%)

Wordy

394

2,115 (avg. 5.4)

248 (62.9%)

12 (3.0%)

Crypto Square

326

1,540 (avg. 4.7)

214 (65.6%)

3 (0.9%)

Largest Series Product

443

2,192 (avg. 4.9)

295 (66.6%)

9 (2.0%)

Zebra Puzzle

109

559 (avg. 5.1)

50 (45.9%)

0 (0.0%)

Two Bucket

282

1,431 (avg. 5.1)

163 (57.8%)

3 (1.1%)

Binary Search Tree

587

2,802 (avg. 4.8)

308 (52.5%)

32 (5.5%)

Say

333

1,924 (avg. 5.8)

193 (58.0%)

5 (1.5%)

Knapsack

120

681 (avg. 5.7)

64 (53.3%)

2 (1.7%)

Palindrome Products

452

2,042 (avg. 4.5)

224 (49.6%)

15 (3.3%)

React

814

3,444 (avg. 4.2)

190 (23.3%)

21 (2.6%)

49 unimplemented practice exercises

Affine Cipher

Alphametics

Bank Account

Book Store

Bottle Song

Bowling

Change

Connect

Conway's Game of Life

Custom Set

Dominoes

DOT DSL

Error Handling

Flatten Array

Food Chain

Forth

Go Counting

Grep

Hangman

House

ISBN Verifier

Killer Sudoku Helper

Ledger

Lens Person

Markdown

Matrix

Micro Blog

OCR Numbers

PaaS I/O

Parallel Letter Frequency

Poker

POV

Proverb

Rectangles

REST API

Robot Name

Satellite

SGF Parsing

Simple Cipher

Simple Linked List

State of Tic-Tac-Toe

Strain

Tournament

Transpose

Tree Building

Twelve Days

Variable Length Quantity

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Word Search

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Zipper

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Programming Tags

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Help manage the tags used to group, filter and recommend solutions, approaches and articles.

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Test Runner

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Create Test Runners that have the single responsibility of taking a solution, running all tests and returning a standardized output.

Current version: 763a0a0a3c34b9af3b33204556262766fb0cc7d2 (Takes up to 10 mins to deploy)

Total Test Runner Runs

1,050,493

Test Run Pass Rate

13.6% (143117)

Test Run Fail Rate

22.2% (232758)

Test Run Error Rate

64.2% (674618)

Representer

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Build a Representer: a bit of code that has the single responsibility of taking a solution and returning a normalized representation of it.

Next goal: Build a Representer. Find out more.

Analyzer

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Build an Analyzer for C: Exercism's analyzers automatically assess student's submissions and provide mentor-style commentary.

Next goal: Build an Analyzer. Find out more.

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