How do you specify that a function may throw an exception in C++?
A. Using the 'throws' keyword
B. Using the 'exception' keyword
C. Using the 'throws()' specifier
D. Using the 'noexcept' specifier
Answer: Option D
Solution (By Examveda Team)
The correct answer is Option D: Using the 'noexcept' specifierHere's why:
Exception handling in C++ allows you to deal with unexpected problems that occur during the execution of a program.
A function can signal that something went wrong by "throwing" an exception.
Let's break down the options:
Option A: Using the 'throws' keyword - The `throws` keyword is not used in standard C++ for specifying exceptions. Languages like Java use `throws`.
Option B: Using the 'exception' keyword - The `exception` keyword is related to exception classes but not to specifying if a function *might* throw an exception.
Option C: Using the 'throws()' specifier - This is also incorrect. C++11 introduced `noexcept` for this purpose. Older C++ standards used something called exception specifications but they are largely deprecated and not the best practice to use anymore.
Option D: Using the 'noexcept' specifier - The `noexcept` specifier is used to specify whether a function may throw an exception. If a function is declared `noexcept`, it promises *not* to throw any exceptions. If it *does* throw an exception, the program might terminate abruptly. The absence of `noexcept` does *not* mean the function *will* throw, only that it *might*.
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Related Questions on Exception Handling in C plus plus
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
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

Ans: A)