Christian Böhme wrote: > Andrew Haley wrote: > >>>> What type is the expression -(b * 2u)? > >> The correct answer is unsigned int. > > Here's the question: Why ? And by which logic ? Because the standard says so. >> Please read C99 Section 6.3.1.1 Para 2, and Section 6.3.1.8. > > Care to point to the appropriate sections in the C++ standard ? Section 5 Para. 9 and Section 4.5. The language is copied from the C Standard. Andrew.