Examples

     The following example shows the use of the vfwprintf function
     in a general error reporting routine:

        #include <stdarg.h>
        #include <stdio.h>
        #include <wchar.h>

        void error(char *function_name, wchar_t *format,  . . . );
        {
           va_list args;

           va_start(args, format);
           /* print out name of function causing error */
           fwprintf(stderr, L"ERROR in %s: ", function_name);
           /* print out remainder of message */
           vfwprintf(stderr, format, args);
           va_end(args);
        }