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

unsigned char table[256];

void create(void){
	unsigned char patt[2];
	unsigned char dest[2];
	int i;
	table[0]=0;
	patt[1]=0;
	for(i=1;i<256;i++){
		patt[0]=i;
		strxfrm(dest,patt,2);
		table[dest[0]]=patt[0];
	}
}

char* make_greater_string(const unsigned char *word){
	unsigned char *workstr;
	int			len;

	workstr=strdup(word);
	while ((len = strlen(workstr)) > 0)
	{
		unsigned char *lastchar = (unsigned char *) (workstr + len - 1);
		unsigned char tmp[2];

		while (*lastchar < (unsigned char) 255)
		{
			strxfrm(tmp,lastchar,2);
			*lastchar=(unsigned char)table[tmp[0]+1];
			return workstr; /* Success! */
		}
		*lastchar = '\0';
	}
	free(workstr);
	return NULL;
}

int main(int argc, char *argv[]){
	unsigned char *newword;
	if (argc<2){
		printf("Usage: %s word\n",argv[0]);
		return 1;
	}
	setlocale(LC_ALL,"");
	create();
	printf("---\n%s\n---\n",&table[20]);
	
	printf("Word is '%s'\n",argv[1]);
	
	newword=make_greater_string(argv[1]);
	printf("Bigger word is '%s'\n",newword);
	
	return 0;
}