Complete Modern C++ - Exception Handling - Part III (Stack Unwinding)

The video tutorial explains stack unwinding and the pitfalls of manual memory management with exception handling. It demonstrates how local objects are destroyed during stack unwinding, but heap-allocated objects can lead to memory leaks if not managed properly. The video emphasizes using smart pointers and the RAII principle to manage memory safely. It also suggests using vectors instead of dynamic arrays to simplify code and prevent memory leaks. The tutorial concludes with a preview of the next video on nested exception handling.

What happens to local objects when an exception is thrown?

• They are ignored.

• They are automatically destroyed.

• They cause a memory leak.

• They are moved to the heap.

Why can memory allocated on the heap be leaked during exceptions?

• Because exceptions only affect global variables.

• Because heap memory is automatically managed.

• Because heap memory is always freed automatically.

• Because the stack unwinding process skips heap memory.

What is the main advantage of using smart pointers?

• They are only useful for global variables.

• They make the code more complex.

• They automatically manage memory and prevent leaks.

• They increase the speed of the program.

How do smart pointers help in exception handling?

• They make exceptions more frequent.

• They ensure memory is freed even if an exception occurs.

• They automatically catch exceptions.

• They prevent exceptions from being thrown.

What is a recommended alternative to dynamic arrays?

• Vectors

• Linked lists

• Queues

• Stacks

What function is used to allocate memory in vectors?

• reserve

• allocate

• malloc

• new

Why is using vectors preferred over dynamic arrays?

• They are faster.

• They are easier to read and maintain.

• They use less memory.

• They are more complex.