Linking structs in C

[Anaconda]

I'm trying to figure out what the easiest
way is to include a struct within a struct:

struct A
{
int x[10];
};

struct B
{
int y[10];
};

When I create an instance of struct B:

struct B instance[100];

How do I include struct A within struct B
such that:

instance[i].y[j].x[k] = 1 ( or whatever)

[foxman]

struct A
{
   int x[10];
};

struct B
{
   struct A y[10];
};

As simple as this.

[Anaconda]

Yes, tested it and it works like a treat.

Its so easy, I feel a bit dumb for asking.