mbsrtowcs

   Converts a sequence of multibyte characters to a sequence of
   corresponding wide-character codes.

   Format

     #include  <wchar.h>

     size_t mbsrtowcs  (wchar_t *dst, const char **src, size_t len,
                       mbstate_t *ps);
 

Additional information available:

Function_Variants               Arguments       Description     Return_Values