Question

Let say I have these:

typedef id Title;

typedef struct{
    Title title;
    int pages;
}Book;

So far, the code is okay. But the problem is here:

typedef struct{
   int shelfNumber;
   Book book;   //How can I make this an array of Book?
}Shelf;

Like what I have stated in the comment in the code, I want to make Book as array so that it can hold a number of books. Is that even possible? If it is, how can I do it?

Answer 1

typedef struct{
    int shelfNumber;
    Book book[10];   // Fixed number of book: 10
 }Shelf;

or

typedef struct{
    int shelfNumber;
    Book *book;     // Variable number of book
 }Shelf;

in the latter case you’ll have to use malloc to allocate the array.