it should be 2^(m-1)-1
because in given m elements 1 element should be primary key, which will
combined with other attributes to form super key.
so there will be 2^(m-1) such subset now we subtract 1 for the phi.so this
should be 2^(m-1)-1.
correct me if i m wrong,,,
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You received this m
Hi!
The overall logic is that u should know the actual memory location
where the data is to be stored or have a reference to it,in ur case
a *a1 it is just a pointer variable .
and this pointer is not pointing to the location where the new object
would be allocated,so it is passed just as
a point
