在 Windows 中使用 C++ 将 Unicode 输出到控制台

Question

I'm still learning C++, so bear with me and my sloppy code. The compiler I use is Dev C++. I want to be able to output Unicode characters to the Console using cout. Whenver i try things like:

#include <iostream>

int main()
{
    std::cout << "Hello World!\n";
    std::cout << "Blah blah blah some gibberish unicode: ĐĄßĞĝ\n";
    system("PAUSE");
    return 0;
}

It outputs strange characters to the console, like µA■Gg. Why does it do that, and how can I get to to display ĐĄßĞĝ? Or is this not possible with Windows?

Answer 1

What about std::wcout ?

#include <iostream>

int main() {
    std::wcout << L"Hello World!" << std::endl;
    return 0;
}

This is the standard wide-characters output stream.

Still, as Adrian pointed out, this doesn't address the fact cmd , by default, doesn't handle Unicode outputs. This can be addressed by manually configuring the console, like described in Adrian's answer:

• Starting cmd with the /u argument;
• Calling chcp 65001 to change the output format;
• And setting a unicode font in the console (like Lucida Console Unicode).

You can also try to use _setmode(_fileno(stdout), _O_U16TEXT); , which require fcntl.h and io.h (as described in this answer , and documented in this blog post ).

Answer 2

I'm not sure Windows XP will fully support what you need. There are three things you have to do to enable Unicode with a command console:

1. Start the command window with cmd /u . The /u says your programs will output Unicode.
2. Use chcp 65001 to indicate you want to use UTF-8 instead of one of the code pages.
3. Select a font with more glyph coverage. The command windows in newer versions of Windows offer Lucida Console Unicode . My XP box has a subset of that called Lucida Console . It doesn't have a very extensive repertoire, but it should be sufficient if you're just trying to display some accented characters.

Answer 3

You can use the open-source {fmt} library to portably print Unicode text, including on Windows, for example:

#include <fmt/core.h>

int main() {
  fmt::print("Blah blah blah some gibberish unicode: ĐĄßĞĝ\n");
}

Output:

Blah blah blah some gibberish unicode: ĐĄßĞĝ

This requires compiling with the /utf-8 compiler option in MSVC.

I don't recommend using wcout because it is non-portable, for example:

std::wcout << L"Blah blah blah some gibberish unicode: ĐĄßĞĝ\n";

will print the ĐĄßĞĝ part incorrectly on macOS or Linux ( https://godbolt.org/z/z81jbb ):

Blah blah blah some gibberish unicode: ??ss??

and doesn't even work on Windows without changing the code page:

Blah blah blah some gibberish unicode:

Disclaimer : I'm the author of {fmt}.

Answer 4

You used the ANSI output stream. You need to use

std::wcout << L"Blah blah blah some gibberish unicode: ĐĄßĞĝ\n";

Also, use std::cin.get() , not system("PAUSE")

Answer 5

In Linux, I can naively do:

std::cout << "ΐ , Α, Β, Γ, Δ, ,Θ , Λ, Ξ, ... ±, ... etc";

and it worked for most of the characters I tried.