First (missed in chapter 4) prefix vs postfix increment

• ++ i // prefix version

• i++ // postfix version

• Also decrementing (--j vs j-- )

• ++ i increments and then returns the value. i++ returns the value and then increments.

• Practice: plus_one.cpp

• int y = ++x; // change x, then assign to y

• int y = z++; // assign to y, then change z