A null-terminated wide string is a sequence of valid wide characters, ending with a null character.
Character classification |
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Defined in header <cwctype> |
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checks if a wide character is alphanumeric (function) |
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checks if a wide character is alphabetic (function) |
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checks if a wide character is lowercase (function) |
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checks if a wide character is an uppercase character (function) |
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checks if a wide 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 wide character is a control character (function) |
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checks if a wide character is a graphical character (function) |
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checks if a wide character is a space character (function) |
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(C++11) | checks if a wide character is a blank character (function) |
checks if a wide character is a printing character (function) |
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checks if a wide character is a punctuation character (function) |
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classifies a wide character according to the specified LC_CTYPE category (function) |
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looks up a character classification category in the current C locale (function) |
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Character manipulation |
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Defined in header <cwctype> |
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converts a wide character to lowercase (function) |
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converts a wide character to uppercase (function) |
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performs character mapping according to the specified LC_CTYPE mapping category (function) |
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looks up a character mapping category in the current C locale (function) |
ASCII values | characters | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
decimal | hexadecimal | octal | |||||||||||||
0–8 | \x0 –\x8 | \0 –\10 | control codes (NUL , etc.) |
≠0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
9 | \x9 | \11 | tab (\t ) |
≠0 | 0 |
≠0 |
≠0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
10–13 | \xA –\xD | \12 –\15 | whitespaces (\n , \v , \f , \r ) |
≠0 | 0 |
≠0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
14–31 | \xE –\x1F | \16 –\37 | control codes |
≠0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
32 | \x20 | \40 | space | 0 |
≠0 |
≠0 |
≠0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
33–47 | \x21 –\x2F | \41 –\57 | !"#$%&'()*+,-./ | 0 |
≠0 | 0 | 0 |
≠0 |
≠0 | 0 | 0 | 0 | 0 | 0 | 0 |
48–57 | \x30 –\x39 | \60 –\71 | 0123456789 | 0 |
≠0 | 0 | 0 |
≠0 | 0 |
≠0 | 0 | 0 | 0 |
≠0 |
≠0 |
58–64 | \x3A –\x40 | \72 –\100 | :;<=>?@ | 0 |
≠0 | 0 | 0 |
≠0 |
≠0 | 0 | 0 | 0 | 0 | 0 | 0 |
65–70 | \x41 –\x46 | \101 –\106 | ABCDEF | 0 |
≠0 | 0 | 0 |
≠0 | 0 |
≠0 |
≠0 |
≠0 | 0 | 0 |
≠0 |
71–90 | \x47 –\x5A | \107 –\132 | GHIJKLMNOP QRSTUVWXYZ | 0 |
≠0 | 0 | 0 |
≠0 | 0 |
≠0 |
≠0 |
≠0 | 0 | 0 | 0 |
91–96 | \x5B –\x60 | \133 –\140 | [\]^_` | 0 |
≠0 | 0 | 0 |
≠0 |
≠0 | 0 | 0 | 0 | 0 | 0 | 0 |
97–102 | \x61 –\x66 | \141 –\146 | abcdef | 0 |
≠0 | 0 | 0 |
≠0 | 0 |
≠0 |
≠0 | 0 |
≠0 | 0 |
≠0 |
103–122 | \x67 –\x7A | \147 –\172 | ghijklmnop qrstuvwxyz | 0 |
≠0 | 0 | 0 |
≠0 | 0 |
≠0 |
≠0 | 0 |
≠0 | 0 | 0 |
123–126 | \x7B –\x7E | \172 –\176 | {|}~ | 0 |
≠0 | 0 | 0 |
≠0 |
≠0 | 0 | 0 | 0 | 0 | 0 | 0 |
127 | \x7F | \177 | backspace character (DEL ) |
≠0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Conversions to numeric formats |
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Defined in header <cwchar> |
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converts a wide string to an integer value (function) |
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converts a wide string to an unsigned integer value (function) |
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converts a wide string to a floating point value (function) |
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Defined in header <cinttypes> |
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(C++11)(C++11) | converts a wide string to std::intmax_t or std::uintmax_t (function) |
String manipulation |
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Defined in header <cwchar> |
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copies one wide string to another (function) |
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copies a certain amount of wide characters from one string to another (function) |
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appends a copy of one wide string to another (function) |
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appends a certain amount of wide characters from one wide string to another (function) |
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transform a wide string so that wcscmp would produce the same result as wcscoll (function) |
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String examination |
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Defined in header <cwchar> |
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returns the length of a wide string (function) |
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compares two wide strings (function) |
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compares a certain amount of characters from two wide strings (function) |
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compares two wide strings in accordance to the current locale (function) |
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finds the first occurrence of a wide character in a wide string (function) |
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finds the last occurrence of a wide character in a wide string (function) |
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returns the length of the maximum initial segment that consists of only the wide characters found in another wide string (function) |
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returns the length of the maximum initial segment that consists of only the wide not found in another wide string (function) |
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finds the first location of any wide character in one wide string, in another wide string (function) |
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finds the first occurrence of a wide string within another wide string (function) |
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finds the next token in a wide string (function) |
Wide character array manipulation |
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Defined in header <cwchar> |
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copies a certain amount of wide characters between two non-overlapping arrays (function) |
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copies a certain amount of wide characters between two, possibly overlapping, arrays (function) |
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compares a certain amount of wide characters from two arrays (function) |
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finds the first occurrence of a wide character in a wide character array (function) |
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copies the given wide character to every position in a wide character array (function) |
Defined in header <cwctype> |
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wctrans_t | scalar type that holds locale-specific character mapping |
wctype_t | scalar type that holds locale-specific character classification |
Defined in header <cwctype> |
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Defined in header <cwchar> |
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wint_t | integer type that can hold any valid wide character and at least one more value |
Defined in header <cwchar> |
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WEOF | a non-character value of type wint_t used to indicate errors (macro constant) |
WCHAR_MIN | the smallest valid value of wchar_t (macro constant) |
WCHAR_MAX | the largest valid value of wchar_t (macro constant) |
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