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std::wmemchr(3) C++ Standard Libary std::wmemchr(3) NAME std::wmemchr - std::wmemchr Synopsis Defined in header <cwchar> const wchar_t* wmemchr( const wchar_t* ptr, wchar_t ch, std::size_t count ); wchar_t* wmemchr( wchar_t* ptr, wchar_t ch, std::size_t count ); Locates the first occurrence of wide character ch in the initial count wide characters of the wide character array pointed to by ptr. If count is zero, the function returns a null pointer. Parameters ptr - pointer to the wide character array to be examined ch - wide character to search for count - number of wide characters to examine Return value Pointer to the location of the wide character, or a null pointer if no such character is found. Example // Run this code #include <iostream> #include <cwchar> #include <clocale> #include <locale> int main() { const wchar_t str[] = L"\0"; wchar_t target = L''; const std::size_t sz = sizeof str / sizeof *str; if (const wchar_t* result = std::wmemchr(str, target, sz)) { std::setlocale(LC_ALL, "en_US.utf8"); std::wcout.imbue(std::locale("en_US.utf8")); std::wcout << "Found '" << target << "' at position " << result - str << "\n"; } } Possible output: Found '' at position 14 See also memchr searches an array for the first occurrence of a charac- ter (function) strchr finds the first occurrence of a character (function) wcschr finds the first occurrence of a wide character in a wide string (function) find find_if finds the first element satisfying specific criteria find_if_not (function template) (C++11) http://cppreference.com 2022.07.31 std::wmemchr(3)
NAME | Synopsis | Parameters | Return value | Example | Possible output: | See also
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