C++ unicode (or wstring?) equivalent for (char)

Question

Can somebody please tell me what would be the Unicode equivalent for "(char)"?

For ASCII I always used for example

 (char)(7)

Now I want to do the same but for Unicode.

But

 (wchar_t)(7)

did not work out, and wchar does not exist.

I want to pass this (possible) Unicode character to a function that accepts a wstring.

Or in other words: How can I programmatically create a wstring from a unicode character value (like 7 for TAB)?

Could you show some code, please? These fragments aren't very useful — bash.d
"Did not work out" is not enough of a problem description. I don't think anyone has any idea of what you are trying to do. — R. Martinho Fernandes
C++ isn't ASCII-aware IIRC, but in C++11 char must be able to store an 8-bit UTF-8 code unit; there's also char16_t and char32_t (with at least 16 and 32 bit respectively). Note a single glyph can be represented by multiple UTF-8/-16 code units, therefore there's no exact equivalent to a char interpreted as an ASCII character. — dyp
I don't know what "ASCII-awareness" is, but it sounds completely useless to me. And in any case, C++ is aware of ASCII in footnote 14. — R. Martinho Fernandes
C++ unicode equivalent for char is, .... char. utf8everywhere.org — Pavel Radzivilovsky

Mike Seymour Mike Seymour · Accepted Answer · 2013-04-02T11:36:39

I want to pass this (possible) Unicode character to a function that accepts a wstring.

Then you'll need to make a wstring, just as you would have to make a string from a char if you needed to pass an ASCII character to a function accepting a string.

function(std::wstring(1, 7)); // length 1, filled with value 7

C++ unicode (or wstring?) equivalent for (char)

2 Answers