Question

Is there a one-liner that will free the memory that is being taken by all pointers you created using mallocs? Or can this only be done manually by freeing every pointer separately?

Answer 1

you could do that by creating some kind of “wrapper” around malloc.
(warning that’s only pseudo code showing the idea, there is no checking at all)

void* your_malloc(size_t size)
{
    void* ptr = malloc(size);

    // add ptr to a list of allocated ptrs here

    return ptr;
}

void your_free(void *pointer)
{
    for each pointer in your list
    {
        free( ptr_in_your_list );
    }
}

But it doesn’t sound like a good idea and I would certainly not do that, at least for general purpose allocation / deallocation. You’d better allocate and free memory responsibly when it is no longer needed.