This header was originally in the C standard library as <ctype.h>.
This header is part of the null-terminated byte strings library.
Functions |
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| checks if a character is alphanumeric (function) |
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| checks if a character is alphabetic (function) |
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| checks if a character is lowercase (function) |
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| checks if a character is an uppercase character (function) |
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| checks if a character is a digit (function) |
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| checks if a character is a hexadecimal character (function) |
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| checks if a character is a control character (function) |
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| checks if a character is a graphical character (function) |
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| checks if a character is a space character (function) |
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(C++11) | checks if a character is a blank character (function) |
| checks if a character is a printing character (function) |
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| checks if a character is a punctuation character (function) |
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| converts a character to lowercase (function) |
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| converts a character to uppercase (function) |
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namespace std {
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);
}
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