What are the differences between automatic and manual memory management in C++?

What are the differences between automatic and manual memory management in C++?

In C++, automatic memory management is handled by the language itself, typically through constructors and destructors, while manual memory management requires the programmer to allocate and deallocate memory using operators like new and delete.

Can you give me examples of when to use each type?

Sure! Use automatic memory management for objects with a known lifetime, like local variables. Use manual memory management for dynamic data structures, like linked lists, where the size may change during runtime.

What are the risks of manual memory management?

The main risks include memory leaks, where allocated memory is not freed, and dangling pointers, which occur when memory is freed but still accessed.

Is there a way to combine both methods?

Yes, you can use smart pointers in C++, which provide automatic memory management while still allowing for manual control when necessary.