How to convert wstring into string?

Question

The question is how to convert wstring to string?

I have next example :

#include 
#include 

int main()
{
    std::wstr         


        

Answer 1

This solution is inspired in dk123's solution, but uses a locale dependent codecvt facet. The result is in locale encoded string instead of UTF-8 (if it is not set as locale):

std::string w2s(const std::wstring &var)
{
   static std::locale loc("");
   auto &facet = std::use_facet>(loc);
   return std::wstring_convert::type, wchar_t>(&facet).to_bytes(var);
}

std::wstring s2w(const std::string &var)
{
   static std::locale loc("");
   auto &facet = std::use_facet>(loc);
   return std::wstring_convert::type, wchar_t>(&facet).from_bytes(var);
}

I was searching for it, but I can't find it. Finally I found that I can get the right facet from std::locale using the std::use_facet() function with the right typename. Hope this helps.