#include <stdio.h>
#include <string.h>
#include <locale.h>

char src[] = { "A sample STRING" };
char dst[20];

void main()
  {
    size_t len;

    setlocale( LC_ALL, "C" );
    printf( "%s\n", src );
    len = strxfrm( dst, src, 20 );
    printf( "%s (%u)\n", dst, len );
  }