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ctype.h

C standard library header
Thing c_header_file Q838011
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ctype.h

Summary

ctype.h is a C header file[1]. ctype.h draws 22 Wikipedia views per month (c_header_file category, ranking #12 of 17).[2]

Key Facts

  • ctype.h's instance of is recorded as C header file[3].
  • ctype.h's part of is recorded as C standard library[4].
  • ctype.h's part of is recorded as C POSIX library[5].
  • ctype.h's part of is recorded as C++ Standard Library[6].
  • ctype.h's Freebase ID is recorded as /m/02_rr9[7].
  • ctype.h's Microsoft Academic ID is recorded as 140580557[8].

Why It Matters

ctype.h draws 22 Wikipedia views per month (c_header_file category, ranking #12 of 17).[2] ctype.h has Wikipedia articles in 9 language editions, a strong signal of global cultural recognition.[9] ctype.h is known by 5 alternative names across languages and contexts.[10]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . Freebase Data Dumps. wikidata.org.
  6. [8] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [9] ↑ . Wikidata sitelinks. wikidata.org.
  3. [10] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). ctype.h. Retrieved May 3, 2026, from https://4ort.xyz/entity/ctype-h
MLA “ctype.h.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/ctype-h.
BibTeX @misc{4ortxyz_ctype-h_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{ctype.h}}, year = {2026}, url = {https://4ort.xyz/entity/ctype-h}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): ctype.h — https://4ort.xyz/entity/ctype-h (retrieved 2026-05-03)

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