字符串 VS 字符串

Question

I am not able to understand the differences between std::string and std::wstring. I know wstring supports wide characters such as Unicode characters. I have got the following questions:

1. When should I use std::wstring over std::string?
2. Can std::string hold the entire ASCII character set, including the special characters?
3. Is std::wstring supported by all popular C++ compilers?
4. What is exactly a "wide character"?

转载于:https://stackoverflow.com/questions/402283/stdwstring-vs-stdstring

Answer 1

1. When you want to store 'wide' (Unicode) characters.
2. Yes: 255 of them (excluding 0).
3. Yes.
4. Here's an introductory article: http://www.joelonsoftware.com/articles/Unicode.html