Comment by mindslight

Sure, my phrasing was overly simplistic, applying in spirit to the way languages define general recursive expressions.

But if you want to be technical, most of your examples would not be considered expressions in the given language.

    int j = i = 0; i < MAX; i++; /* ? I think not. */

But sure, many languages also use parenthesis for things besides general expressions. Ultimately this argument is anti-productive nitpicking.