what does this function declaration mean in c++

Question

virtual const char* what() const throw()
{

}

AFAIK it\'s a function that will return a constant pointer to a mutable char. The rest I am not sure.

Answer 1

virtual function returning a pointer to a non-modifiable buffer of chars, taking no arguments, does not modify any member variables of the class is belongs to (i.e. can be called on const instances), and won't throw any kind of exception.