4. 15 pts] Consider the C declarations and code below; draw a memory diagram that shows the state at position 1 . It's a bit tricky, but try to label all the different parts of the struct array fields (x(01.a, x[O.b[01, x(.str, x[1].a, ) struct struct_af int bl3] int a; char *str; 1i typedef struct struct_a struct_s; structs x[2], *p = NULL; char *s1 = "hello". int i; for (1 1 bli a = 12; p-> str = s1; p-> a =-23; p-> str = s1; int *q &x[1].a; // position 1