C character classification

en

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C character classification

Quality:

Ctype.h - C standard library header. Article “C character classification” in English Wikipedia has 10.8 points for quality (as of July 1, 2025). The article contains 1 references and 5 sections. The article also contains templates indicating quality issues, therefore its score was reduced by 0.57 points.

This article has the best quality in Greek Wikipedia. However, this article is the most popular in English version.

Since the creation of article “C character classification”, its content was written by 56 registered users of English Wikipedia and edited by 133 registered Wikipedia users in all languages.

The article is cited 152 times in English Wikipedia and cited 464 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (English): #19574 in October 2011
  • Global: #40210 in October 2011

The highest popularity rank from 2008:

  • Local (English): #128183 in October 2009
  • Global: #172980 in November 2010

There are 10 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

Languages with the highest quality

#LanguageQuality gradeQuality score
1Greek (el)
Ctype.h
16.5054
2Catalan (ca)
Ctype.h
15.7104
3Russian (ru)
Ctype.h
11.6011
4Chinese (zh)
Ctype.h
11.1049
5English (en)
C character classification
10.765
6Italian (it)
Ctype.h
6.8237
7Ukrainian (uk)
Ctype.h
4.4362
8Spanish (es)
Ctype.h
3.201
9Korean (ko)
C 문자 분류
2.6302
10Portuguese (pt)
Ctype.h
1.5051
More...

The following table shows the most popular language versions of the article.

Most popular in all the time

The most popular language versions of the article "C character classification" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
C character classification
453 960
2Spanish (es)
Ctype.h
132 131
3Russian (ru)
Ctype.h
131 193
4Italian (it)
Ctype.h
100 669
5Chinese (zh)
Ctype.h
42 674
6Korean (ko)
C 문자 분류
27 782
7Portuguese (pt)
Ctype.h
22 015
8Ukrainian (uk)
Ctype.h
10 360
9Greek (el)
Ctype.h
1 066
10Catalan (ca)
Ctype.h
180
More...

The following table shows the language versions of the article with the highest popularity in the last month.

Most popular in June 2025

The most popular language versions of the article "C character classification" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
C character classification
1 036
2Russian (ru)
Ctype.h
269
3Chinese (zh)
Ctype.h
146
4Spanish (es)
Ctype.h
107
5Italian (it)
Ctype.h
63
6Portuguese (pt)
Ctype.h
35
7Korean (ko)
C 문자 분류
32
8Ukrainian (uk)
Ctype.h
24
9Catalan (ca)
Ctype.h
18
10Greek (el)
Ctype.h
15
More...

The following table shows the language versions of the article with the highest Authors’ Interest.

The highest AI

Language versions of the article "C character classification" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
C character classification
56
2Italian (it)
Ctype.h
21
3Russian (ru)
Ctype.h
21
4Spanish (es)
Ctype.h
8
5Portuguese (pt)
Ctype.h
7
6Ukrainian (uk)
Ctype.h
6
7Korean (ko)
C 문자 분류
5
8Greek (el)
Ctype.h
4
9Chinese (zh)
Ctype.h
4
10Catalan (ca)
Ctype.h
1
More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

The highest AI in June 2025

Language versions of the article "C character classification" with the highest AI in June 2025
#LanguageAI awardRelative AI
1Catalan (ca)
Ctype.h
0
2Greek (el)
Ctype.h
0
3English (en)
C character classification
0
4Spanish (es)
Ctype.h
0
5Italian (it)
Ctype.h
0
6Korean (ko)
C 문자 분류
0
7Portuguese (pt)
Ctype.h
0
8Russian (ru)
Ctype.h
0
9Ukrainian (uk)
Ctype.h
0
10Chinese (zh)
Ctype.h
0
More...

The following table shows the language versions of the article with the highest number of citations.

The highest CI

Language versions of the article "C character classification" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
C character classification
152
2Korean (ko)
C 문자 분류
108
3Chinese (zh)
Ctype.h
61
4Russian (ru)
Ctype.h
41
5Portuguese (pt)
Ctype.h
36
6Ukrainian (uk)
Ctype.h
34
7Italian (it)
Ctype.h
14
8Greek (el)
Ctype.h
13
9Spanish (es)
Ctype.h
5
10Catalan (ca)
Ctype.h
0
More...

Scores

Estimated value for Wikipedia:
English:
Global:
Popularity in June 2025:
English:
Global:
Popularity in all years:
English:
Global:
Authors in June 2025:
English:
Global:
Registered authors in all years:
English:
Global:
Citations:
English:
Global:

Quality measures

Interwikis

#LanguageValue
caCatalan
Ctype.h
elGreek
Ctype.h
enEnglish
C character classification
esSpanish
Ctype.h
itItalian
Ctype.h
koKorean
C 문자 분류
ptPortuguese
Ctype.h
ruRussian
Ctype.h
ukUkrainian
Ctype.h
zhChinese
Ctype.h

Popularity rank trends

Best Rank English:
#128183
10.2009
Global:
#172980
11.2010

AI rank trends

Best Rank English:
#19574
10.2011
Global:
#40210
10.2011

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Ctype.h from Wikipedia articles about C standard library, C data type, Windows.h, String.h and Unistd.h. Whereas reading the article about Ctype.h people most often go to Wikipedia articles on C string handling, C data type, String.h, C standard library and Errno.h.

Cumulative results of quality and popularity of the Wikipedia article

List of Wikipedia articles in different languages (starting with the most popular):

News from 12 August 2025

On 12 August 2025 in multilingual Wikipedia, Internet users most often read articles on the following topics: Cristiano Ronaldo, Wednesday, Georgina Rodríguez, ChatGPT, Weapons, Jenna Ortega, deaths in 2025, Taylor Swift, Miguel Uribe Turbay, 2025–26 UEFA Champions League.

In English Wikipedia the most popular articles on that day were: Weapons (2025 film), Danielle Spencer (American actress), Cristiano Ronaldo, Deaths in 2025, Taylor Swift, Wednesday (TV series), Superman (2025 film), Georgina Rodríguez, Coolie (2025 film), The Fantastic Four: First Steps.

About WikiRank

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information