I am writing a program that needs to be able to work with text in all languages. My understanding is that UTF-8 will do the job, but I am experiencing a few problems with it.
Am I right to say that UTF-8 can be stored in a simple char in C++? If so, why do I get the following warning when I use a program with char, string and stringstream: warning C4566: character represented by universal-character-name '\uFFFD' cannot be represented in the current code page (1252). (I do not get that error when I use wchar_t, wstring and wstringstream.)
Additionally, I know that UTF is variable length. When I use the at or substr string methods would I get the wrong answer?