I’m trying to open file using wifstream:

#include <sstream>
#include <fstream>

wstring readFile(const char* filename)
{
    wifstream wif(filename);
    wstringstream wss;
    wss << wif.rdbuf();
    return wss.str();
}

It is reading file that conatains english and russian symbols and placing text into wstring.

Then, I tried to print all of that into console and all russian symbols were replaced with another. English symbols were correct.

I found, that all characters codes (like u…) of replaced symbols are right. Also them were out of ASCII table, like å – U+00E5 (en.wikipedia.org/wiki/List_of_Unicode_characters)

I think there’s problem in decoding file into utf-8.