(C++) std::domain_error

 

std::domain_error is an exception thrown when a mathematically invalid domain is used.

 

std::domain_error is a derived class from std::logic_error. std::logic_error is a derived class from td::exception.

 

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#include <cmath> #include <iostream> #include <stdexcept> int main() {   try   {     const double x = std::acos(2.0);     std::cout << x << '\n';   }   catch (std::domain_error& e)   {     std::cout << e.what() << '\n';   }   catch (...)   {     std::cout << "Something unexpected happened" << '\n';   } }

 

Note: I hoped that std::domain_error would be thrown, instead the value 'nan' would be written to the screen.

 

 

 

 

 

External links

• GCC page about std::domain_error