C Dynamic Memory

Question 1

What is the Heap Used for?

Answer 1

Dynamic allocation

Question 2

What does malloc() and free() do?

Answer 2

Malloc assigns memory and free frees it once we are done

Question 3

What is size_t?

Answer 3

Just unsigned int

Question 4

What happens if request more memory than we have

Answer 4

Returns null

Question 5

If I wanted to createa typedef string, how would I initilize it in main?

Answer 5

In main, you would want to use strcpy(location, name);

Question 6

What is a memory leak?

Answer 6

Must free() memory or we will have memory on the heap we can no longer get to

Question 7

When making a typedef struct, when should you use sizeof and strlen/strcpy?

Answer 7

Use sizeof to malloc the pointer object while use strlen/strcpy if you don’t have a pointer object