truely said that ! thanks.
On Thu, Jun 11, 2009 at 11:37 AM, peternilsson42<[email protected]> wrote: > > > "peternilsson42" <peternilsso...@...> wrote: >> "Sharma, Hans Raj \(London\)" <hansraj_sharma@> wrote: >> > I have never seen difference in the sizeof(char *) and >> > sizeof(int *). >> > Is there any such system with a difference? >> >> Why do you care? What advantage would you gain from them >> necessarily being the same? >> >> The point is that the language standards allow them to be >> different. There have certainly been implementations where >> int and void pointers had different representations. > > "The issue is is that pointers of different types can have > different sizes. E.g. sizeof(int *) could be different to > sizeof(char *). Consider an archirecture that is word > addressed i.e. a native address representation can only > select a specific word in memory. That would be fine for, > say, int * but if the C implementation wanted to support > bytes that were smaller than the system's word it would > have to supply extra information in C pointer type such > as char * in order to select the particular byte within a > word. In that case sizeof(char *) may be larger than > sizeof(int *)." > -- Lawrence Kirby in comp.lang.c > > -- > Peter > >
