What is the difference between stack and heap in programming?

What is the difference between stack and heap in programming?

The stack is a region of memory that stores temporary variables created by functions, while the heap is used for dynamic memory allocation.

Can you explain how memory allocation works in the stack?

Sure! In the stack, memory is allocated in a last-in, first-out manner. When a function is called, its local variables are pushed onto the stack.

What about the heap? How is it different in terms of allocation?

The heap allows for dynamic memory allocation, meaning you can allocate and free memory at any time during the program's execution.

Are there any performance differences between using stack and heap?

Yes, stack allocation is generally faster because it follows a simple last-in, first-out structure, while heap allocation can be slower due to fragmentation.

When should I use stack vs heap in my programs?

Use the stack for small, temporary variables and the heap for larger, dynamic data structures that need to persist beyond the function scope.