is ignored, the “pre” form (++i) is never less efficient than the “post” form (i++), and is often more efficient. This is because post- increment (or decrement) requires a copy of i to be made, which is pre-increment? The tradition developed, in C, of using post-increment when the expression value is not used, especially in for loops. Some find post-increment easier to read, since the “subject” (i) precedes