Struct assignment

If I have the ff struct:

struct A
{
unsigned int i;
char s[LONG_ENOUGH];
} a, b;


And use them in code like this:

a.i = 42 ;
strcpy(a.s,"test");

b.i = 100 ;

b = a ;

at this point, a (bitwise?) copy of a is made to b. Question is:

1). is b.s now ptr to a.s ? (I think so)
If so, what happens if for instance variable 'a' goes out of scope (?)

2). Does the compiler generate an implicit "memcpy" or "memmove" behind the scenes when it sees an assignment like this (to avoid dangling ptrs)?
.

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