08 01 expression evaluation order

Given a compound expression, the order in which sub-expressions are evaluated is important when the sub-expressions have side-effects. P4 expressions are evaluated as follows:

• Boolean operators && and || use short-circuit evaluation—i.e., the second operand is only evaluated if necessary.
• The conditional operator e1 ? e2 : e3 evaluates e1, and then either evaluates e2 or e3.
• All other expressions are evaluated left-to-right as they appear in the source program.
• Method and function calls are evaluated as described in Section Calling convention: call by copy in/copy out.