One other point: The  preceding chapter used sizeof with parentheses, but this example
doesn’t. Whether you  use  parentheses depends on whether you  want the size of a type or the size
of a particular quantity. Parentheses are  required for  types but are  optional for  particular
quantities. That is, you  would use  sizeof(char) or sizeof(float) but can use  sizeof name or
sizeof 6.28. However, it is all right to use  parentheses in these cases, too, as in sizeof (6.28).