What library is Isdigit in C++?

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Tags

1. #isdigit
2. #takes
3. #though
4. #value
5. #passed
6. #character
7. #internally
8. #ascii
9. #defined
10. #check
11. #single
12. #ctype
13. #integer
14. #function
15. #header
16. #converted
17. #returns
18. #argument