C++ output Unicode in variable

Question

I'm trying to output a string containing unicode characters, which is received with a curl call. Therefore, I'm looking for something similar to u8 and L options for literal strings, but than applicable for variables. E.g.:

const char *s  = u8"\u0444";

However, since I have a string containing unicode characters, such as:

mit freundlichen Grüßen

When I want to print this string with:

cout << UnicodeString << endl;

it outputs:

mit freundlichen Gr??en

When I use wcout, it returns me:

mit freundlichen Gren

What am I doing wrong and how can I achieve the correct output. I return the output with RapidJSON, which returns the string as:

mit freundlichen Gr��en

Important to note, the application is a CGI running on Ubuntu, replying on browser requests

Answer 1

On my system the following produces the correct output. Try it on your system. I am confident that it will produce similar results.

#include <string>
#include <iostream>
using namespace std;

int main()
{
    string s="mit freundlichen Grüßen";
    cout << s << endl;
    return 0;
}

If it is ok, then this points to the web transfer not being 8-bit clean.

Mike.