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#include 

#include 

int virtual_getc_str(void *sp, const void *obj)

// get next chat from string obj, save point is ptr to string char ptr

{

    int ch;

    const char *s = (const char *)obj;

    const char**spc= (const char**)sp;

    if (!s || !spc) return EOF;  // error

    if (!*spc) *spc = s;    // first call, init savepoint

    if (!**spc) return EOF;  // EOS

    ch = **spc; (*spc)++ ;

    return ch;

}

void virtual_ungetc_str(void *sp, int c, const void *obj)

// if can, one step back savepoint in s

{

    const char *s = (const char *)obj;

    const char**spc= (const char**)sp;

    if (s && spc && *spc > s) (*spc)--;

}

int vsscanf ( const char * s, const char * format, va_list arg )

{

    return format_scan(s, format, arg, &virtual_getc_str, &virtual_ungetc_str);

};

int sscanf ( const char * s, const char * format, ...)

{

   va_list      arg;

   int  n;

   va_start(arg, format);

   n = vsscanf(s, format, arg);

   va_end(arg);

   return n;

}