what is a domain error

Question

in c++, has a base class for \'domain errors\', std::domain_error. i don\'t understand under what circumstances i should throw a domain error in my code. all

Answer 1

It's for logic errors of the class of "domain" errors. This could apply to any situation where the input to a function exceeds the allowable domain for it to operate on. That's its stated purpose in the standard.

For example, you have a function that takes only positive floats, so it throws a domain_error for negative numbers.