15.2 Arrays as Fields

When you declare field in a structure as an array, as here:

struct record
  {
    char *name;
    int data[4];
  };

Each struct record object holds one string (a pointer, of course) and four integers, all part of a field called data. If recptr is a pointer of type struct record *, then it points to a struct record which contains those things; you can access the second integer in that record with recptr->data[1].

If you have two objects of type struct record, each one contains an array. With this declaration,

struct record r1, r2;

r1.data holds space for 4 ints, and r2.data holds space for another 4 ints,