On Sun, Sep 4, 2016 at 11:35 PM, Anselm R Garbe <[email protected]> wrote: > See http://www.open-std.org/jtc1/sc22/WG14/www/docs/n1256.pdf 6.5.3 > for unary operator specification of the C language.
6.5.3 shows (the relevant parts)
unary-expression:
postfix-expression
....
sizeof unary-expression
sizeof ( type-name )
6.5.2:
postfix-expression:
primary-expression
....
6.5.1:
primary-expression:
....
( expression )
As a result the parens are required for types, and acceptable for variables.
