Why exception handling is required in C++ - Quick Recap

Recall & Review

beginner

What is the main purpose of exception handling in C++?

Exception handling helps manage errors or unexpected events during program execution without crashing the program.

beginner

How does exception handling improve program reliability?

It allows the program to catch errors and respond gracefully, preventing abrupt termination and allowing recovery or cleanup.

beginner

What happens if an exception is not handled in C++?

If an exception is not caught, the program will terminate unexpectedly, which can cause data loss or corruption.

intermediate

Why is exception handling better than using error codes?

Exception handling separates error handling code from regular code, making programs easier to read and maintain.

beginner

Give a real-life example that explains why exception handling is needed.

Like a car's airbag activates only during a crash to protect passengers, exception handling activates only when errors occur to protect the program.

What does exception handling allow a program to do?

A Ignore all errors silently

B Make the program run faster

C Automatically fix all bugs

D Handle errors without stopping the program

Exception handling lets the program catch errors and continue or exit gracefully instead of crashing.

What keyword is used in C++ to catch exceptions?

A try

B catch

C throw

D handle

The 'catch' keyword is used to define a block that handles exceptions thrown in the 'try' block.

What happens if an exception is not caught?

A Program terminates unexpectedly

B Program continues normally

C Exception is ignored

D Compiler fixes the error

If no catch block handles the exception, the program will terminate abruptly.

Why is exception handling preferred over error codes?

A It makes code harder to read

B It mixes error and normal code

C It separates error handling from normal code

D It removes the need to test code

Exception handling separates error handling logic, improving code clarity and maintenance.

Which of these is NOT a benefit of exception handling?

A Automatically prevents all bugs

B Allows graceful error recovery

C Improves program stability

D Helps clean up resources on error

Exception handling helps manage errors but does not automatically prevent bugs.

Explain why exception handling is important in programming.

Think about what happens when something unexpected occurs during a program run.

Describe how exception handling differs from using error codes.

Consider how the program flow looks with and without exceptions.