std::wcslen

 

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Null-terminated wide strings

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wcstol wcstoll wcstoul wcstoull	wcstof wcstod wcstold
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wcslen wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp	wcsxfrm wcschr wcsrchr wcspbrk wcsspn wcscspn wcsstr wcstok
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Defined in header <cwchar>
std::size_t wcslen( const wchar_t *str );

Returns the length of a wide string, that is the number of non-null wide characters that precede the terminating null wide character.

Parameters

str

-

pointer to the null-terminated wide string to be examined

Return value

The length of the null-terminated wide string str.

Example

run this code

#include <iostream>
#include <cwchar>
int main()
{
    const wchar_t* str = L"Hello, world!";
    std::wcout << "The length of L\"" << str << "\" is " << std::wcslen(str) << '\n';
}

Output:

The length of L"Hello, world!" is 13