What is this kind of definition ?

[hentaiw]

char *search_and_replace_alloc(const char *str, const char *oldsubstr, 
                               const char *newsubstr) throw(bad_alloc) {}

What with the throw part ? And should I include in the declaration too ?

[unoriginal]

The only exception that this function might throw is an exception of type bad_alloc. If it throws an exception with a different type, either directly or indirectly, it cannot be caught by a regular bad_alloc-type handler.

[hentaiw]

Can't I just try-throw-catch this exception ?

[LB]

If you want. That line just says that's the only exception it is *meant* to throw, so that you know to write code to catch it if you want to handle it.