Seems I could not present myself correctly...
Heap and Virtual memory are different
see this for heaps
http://msdn2.microsoft.com/en-us/library/aa366711(VS.85).aspx
This...

You can use component object modeling, runtime polymorphism, Pure virtual functions.

Dlls (Dynamicly linked library)

Thanks,
Prateek

hi
There are two things first
const double *highest = a;
this line says highest is a pointer to a costant means u cant change the content highest is pointing to, next

if (a[i] > *highest)
...