pc_fn++;
if (pc_fn%10==0&&pc_fn%100!=0)
{ *(fn_in+len-2)+=1; *(fn_in+len-1)-=9; }
else if (pc_fn%100!=0) *(fn_in+len-1)+=1;
if (pc_fn%100==0) { *(fn_in+len-3)+=1; *(fn_in+len-2)-=9; *(fn_in+len-1)-=9; }
fp_read=fopen(fn_in,"rb");
}
fclose (fp_read); fclose (fp_write);
printf ("\n OK! the file \" %s \" be created successfuly\n",fn_out);
printf ("\n %d files been added\n",pc_fn-1);
}