How to convert string to wstring and wstring to string - how to deal with asian language in C++

We learn how to convert multibyte char string or char* to wide character string, and wide character string or wchar_t* to multi byte char string. We also learn how to convert std::string to std::wstring, and std::wstring to std::string. To properly deal with asian languages such as Korean, Japanese, and Chinese in our software development, we need to install these languages on our development machine, also make proper system settings. mbsrtowcs - multi byte string to wide character string
wcsrtombs - wide character string to multi byte string
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