Give memory snapshots after each of these sets of statements are executed. 1. int a=1, b=2, *ptr, ptr = &b: 2. int a=1, b=2, *ptr=&b; a *ptr: a=1, b=2, 3. int c=5, *ptr=&c; b *ptr; *ptr a; int a=1, b=2, c=5, *ptr; ptr &ci = *ptr