Expression sequencing query (better test)

[C Compiler ProjectDebbie Coutant]

      There is a new operator in the proposed ANSI C standard that forces
      expression grouping, it is the unary plus operator. The unary plus is
      only useful for expressions that involve >1 uses of the same operator,

      for example:   a+b+c
      With the unary plus operator a+b+c can be forced to be evaluated as
      (a+b)+c using the following:  +(a+b) + c
      By ANSI's definition this will force (a+b) to be evaluated first.
      Looks like somebody thought of the order-of-evaluation problem and
      attempted to 'fix' it in the ANSI proposal already.