std:: wmemset
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Defined in header
<cwchar>
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wchar_t
*
wmemset
(
wchar_t
*
dest,
wchar_t
ch,
std::
size_t
count
)
;
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Copies the wide character ch into each of the first count wide characters of the wide character array pointed to by dest .
If overflow occurs, the behavior is undefined.
If count is zero, the function does nothing.
Parameters
| dest | - | pointer to the wide character array to fill |
| ch | - | fill wide character |
| count | - | number of wide characters to fill |
Return value
Returns a copy of dest .
Notes
This function is not locale-sensitive and pays no attention to the values of the wchar_t objects it writes: nulls as well as invalid wide characters are written too.
Example
#include <clocale> #include <cwchar> #include <iostream> #include <locale> Β int main() { wchar_t ar[4] = {L'1', L'2', L'3', L'4'}; std::wmemset(ar, L'\U0001f34c', 2); // replaces [12] with the π bananas std::wmemset(ar + 2, L'θ', 2); // replaces [34] with the θ bananas Β std::setlocale(LC_ALL, "en_US.utf8"); std::wcout.imbue(std::locale("en_US.utf8")); std::wcout << std::wstring(ar, 4) << '\n'; }
Possible output:
ππθθ
See also
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fills a buffer with a character
(function) |
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copies a certain amount of wide characters between two non-overlapping arrays
(function) |
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copy-assigns the given value to N elements in a range
(function template) |
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C documentation
for
wmemset
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