| description | Learn more about: <cctype> | |
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| title | <cctype> | |
| ms.date | 11/04/2016 | |
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| ms.assetid | 3fd18bfd-c414-4def-bac1-c362e1fe8b71 |
Includes the Standard C library header <ctype.h> and adds the associated names to the std namespace.
Header: <cctype>
Namespace: std
Including this header ensures that the names declared using external linkage in the Standard C library header are declared in the std namespace.
int isalnum(int c);
int isalpha(int c);
int isblank(int c);
int iscntrl(int c);
int isdigit(int c);
int isgraph(int c);
int islower(int c);
int isprint(int c);
int ispunct(int c);
int isspace(int c);
int isupper(int c);
int isxdigit(int c);
int tolower(int c);
int toupper(int c);Header Files Reference
C++ Standard Library Overview
Thread Safety in the C++ Standard Library