#include <stdio.h>
#include <mbctype.h>
#include <mbstring.h>

const unsigned char chars[] = {
    ' ',
    '.',
    '1',
    'A',
    0x81,0x40, /* double-byte space */
    0x82,0x60, /* double-byte A */
    0x82,0xA6, /* double-byte Hiragana */
    0x83,0x42, /* double-byte Katakana */
    0xA1,      /* single-byte Katakana punctuation */
    0xA6,      /* single-byte Katakana alphabetic */
    0xDF,      /* single-byte Katakana alphabetic */
    0xE0,0xA1, /* double-byte Kanji */
    0x00
};

#define SIZE sizeof( chars ) / sizeof( unsigned char )

void main()
  {
    int                 j, k;
    const unsigned char *prev;

    _setmbcp( 932 );
    prev = &chars[ SIZE - 1 ];
    do {
      prev = _mbsdec( chars, prev );
      j = mblen( prev, MB_CUR_MAX );
      if( j == 0 ) {
        k = 0;
      } else if ( j == 1 ) {
        k = *prev;
      } else if( j == 2 ) {
        k = *(prev)<<8 | *(prev+1);
      }
      printf( "Previous character %#6.4x\n", k );
    } while( prev != chars );
  }