wmemset

Header: <wchar.h>

Copies the wide character ch into each of the first count wide characters of the wide character array (or integer array of compatible type) pointed to by dest.

# Declarations

wchar_t* wmemset( wchar_t* dest, wchar_t ch, size_t count );

(since C95)

# 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 <locale.h>
#include <stdio.h>
#include <wchar.h>
 
int main(void)
{
    wchar_t ar[10] = L"1234567890"; // no trailing null in the array
    wmemset(ar, L'\U0001f34c', 5); // replaces [12345] with the 🍌 bananas
    wmemset(ar + 5, L'蕉', 5); // replaces [67890] with the 蕉 bananas
 
    setlocale(LC_ALL, "en_US.utf8");
    for (size_t n = 0; n < sizeof ar / sizeof *ar; ++n)
        putwchar(ar[n]);
    putwchar(L'\n');
}