On Sat, 29 Oct 2011 23:08:04 +0300, Jani Nikula <jani@nikula.org> wrote: > strtoul() won't touch the data pointed to by p (it only modifies p), so > in that sense it could be const, but you're right in that it really > should be 'char *', just for a more complicated reason. Thanks for > making me look it up: http://c-faq.com/ansi/constmismatch.html (not the > best of explanations, perhaps, but gives an idea why the 2nd parameter > of strtoul() can't be 'const char **'). Oh, right, thanks for the clarification. As I often do in situations such as this, I confused "const char *" and "char const *".