> You mean if you write: > > if ( 0 =3D x ) ... > > then not all C compiler will generate an error? No C compiler should give an error, because this is valid C, however=20 unlikely it is that it is what the author meant to write. But any half-decent C compiler should give a warning. --=20 Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: www.voti.nl consultancy, development, PICmicro products docent Hogeschool van Utrecht: www.voti.nl/hvu C++ on uC blog: http://www.voti.nl/erblog --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .