# ctype.h

> C standard library header

**Wikidata**: [Q838011](https://www.wikidata.org/wiki/Q838011)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/C_character_classification)  
**Source**: https://4ort.xyz/entity/ctype-h


## References

1. Freebase Data Dumps. 2013