C order of elements in the structure

Question

I am new to C and I was wondering if there is an order of elements in the structure.

I have the following structure:

struct list
{
    struct list_el *head;
    int size;
}

I use this to create a linked list. The head points to the first element, and the size indicates the number of elements in the list.

I also have the following function to initialize a list.

typedef struct list list;

list* list_init()
{
    list *list = malloc(sizeof(list));
    if(list)
    {
        list->head = NULL;
        list->size = 0;
        return list;
    }
    return NULL;
}

, - , , valgrind, , 4 list_init(), 0 list->size. / , . . , ( size , head), , NULL head, size . - , ?

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Answer 1

, , sizeof(list) (), . , , , .

.

:

list *list_init(void)
{
    list *list_data = malloc(sizeof(list));
    if (list_data)
    {
        list_data->head = NULL;
        list_data->size = 0;
        return list_data;
    }
    return NULL;
}