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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' specifier
Here'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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Comments (1)

  1. Gopal Ambore
    Gopal Ambore:
    5 months ago

    Ans: A)

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