Write wchar_t* to file - works only for some characters

Question

I have methods which returns unicode texts and i need to write them into file but some characters are not written. I have the following:

const wchar_t* getStandardText() {
    return L"test";
}

const wchar_t* getUnicodeText()
{
    return L"testíček";
}

int main()
{
    FILE *file = fopen(FILE_NAME, "a");

    fputws(getStandardText(), file);
    fputws(getUnicodeText(), file);

    fclose(file);
}

Output in file:

testtestí

Much more confusing for me is that some characters like "í" works and others like "č" not.

• I am on Windows with VS 2015 Pro.
• For reading of file i use Notepad++ which tells me the file has ANSI encoding.

Answer 1

This works on Windows... Change your mode parameter to have an explicit encoding...

FILE *file = fopen("foobar.txt", "a+, ccs=UTF-16LE");

OR

FILE *file = fopen("foobar.txt", "a+, ccs=UTF-8");

That appears to force the byte-order-marks (FF FE) onto the file header to indicate the file's text is Unicode.