13 Oct 96 22:41, Paul Edwards wrote to Paul Wankadia:

 > The sizeof operator yields the size (in bytes) of its operand, which 
 > may be an expression or the parenthesized name of a type.

 > Now, as far as I am aware, an "expression" would include putting the 
 > variable in parentheses, e.g. x and (x) should both be valid 
 > expressions.  Is there are circumstance where x would work, but (x) 
 > wouldn't?  Not that comes to mind.  What about the reverse?

If sizeof is being applied to a type then parentheses are required,
otherwise they are optional.  In other words, if x is of type int, both
sizeof x and sizeof(x) are valid.  However, if x happens to be a type, eg.

typedef int x;

then sizeof(x) is valid but sizeof x is not.

Regards
Andrew

-- randy{at}zws.com

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