Arithmetic Expressions

An arithmetic expression can be an identifier of a numeric elementary item, a numeric literal, such identifiers and literals separated by arithmetic operators or bitwise operators (or both), two arithmetic expressions separated by an arithmetic or bitwise operator, or an arithmetic expression enclosed in parentheses. Any arithmetic expression can be preceded by a unary arithemetic or bitwise operator.

In the following discussion:

Those identifiers and literals appearing in an arithmetic expression must represent either numeric elementary items or numeric literals on which arithmetic can be performed.