C declare an array for a struct inside a struct

Question

So I have something like this:

struct cat{
    int breed;
    enum state status;
    ...    

    struct{
        int catNumber;
        ...
    } feederOperations[MAX_FEEDER];
}cats[MAX_CATS];

Don't worry if the code deosn't make sense, all I'm wondering is how should/ can I declare a new 1d array of the inside structure?

I mean if I need a separate one in another function? Also isn't that sort of like a 2d array so it's tied to cats[]? or can I call for feederOperations[] just treating it like a normal 1d array? @ikegami — Sheng
– Sheng, Commented Sep 9, 2020 at 4:03
@PapaSheng You can declare as many as you like, using the same syntax you're using for feederOperations or any other data type you need. — Tom Karzes
– Tom Karzes, Commented Sep 9, 2020 at 4:15

kiran Biradar · Accepted Answer · 2020-09-09 04:25:56Z

1

Once you remove the anonymous of the inner structure and give it a name.

There is no special scoping rules for inner structures in C which means that the scope of struct cat is the same as the scope of struct feederOp.

struct cat{
    int breed;
    enum state status;
    ...    

    struct feederOp {
        int catNumber;
        ...
    } feederOperations[MAX_FEEDER];
}cats[MAX_CATS];

Thus you can create variable of type struct feederOp wherever you need as below.

struct feederOp var1;

answered Sep 9, 2020 at 4:25

kiran Biradar

12.8k3 gold badges21 silver badges44 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

C declare an array for a struct inside a struct

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related