What is the purpose of the 'std::unexpected' function in C++ exception handling?

What is exception handling in C++?

A. A method to handle errors during runtime

B. A method to handle errors during compile time

C. A method to handle errors during linking

D. A method to handle errors during execution

Which keyword is used to throw an exception in C++?

A. raise

B. throw

C. catch

D. try

What is the purpose of the 'try' block in exception handling in C++?

A. To catch exceptions

B. To throw exceptions

C. To define the block of code that may generate exceptions

D. To handle exceptions

Which of the following is not a standard exception class in C++?

A. IOException

B. std::exception

C. std::runtime_error

D. std::out_of_range