Learn and Master C Programming - Stack vs. Heap

The video tutorial explains the differences between stack and heap memory allocation, demonstrating how to allocate integers both statically and dynamically. It emphasizes the importance of using 'sizeof' for dynamic memory allocation to avoid hardcoding sizes. The tutorial also covers allocating large memory chunks, such as arrays, and highlights the significance of freeing allocated memory to prevent memory leaks. A complete example is provided to illustrate the process of allocating, using, and freeing memory on the heap.

What is the primary difference between stack and heap memory allocation?

• Both stack and heap are used for static memory allocation.

• Stack is used for dynamic memory allocation, while heap is for static.

• Stack is for static memory allocation, while heap is for dynamic.

• Both stack and heap are used for dynamic memory allocation.

Why is it not recommended to hardcode memory sizes?

• It makes the code more readable.

• It can lead to inefficient memory usage.

• It ensures memory is always available.

• It simplifies the code.

How can dynamic memory allocation be made flexible?

• By allocating memory on the stack.

• By using user input or file sizes.

• By using the 'sizeof' operator.

• By using fixed values for memory size.

What should you always do after using malloc to allocate memory?

• Ignore the memory allocation.

• Reallocate the memory.

• Immediately use the memory.

• Free the memory to avoid leaks.

What is a good practice after freeing a pointer?

• Set the pointer to null.

• Leave the pointer as it is.

• Use the pointer again.

• Reallocate the pointer immediately.

What is the consequence of not freeing allocated memory?

• The program runs faster.

• The program uses less memory.

• The program may experience memory leaks.

• The program becomes more secure.

What should you check for after calling malloc?

• If the memory is on the stack.

• If the memory is already freed.

• If the pointer is null.

• If the pointer is not null.