In this subdirectory we just have some examples of peering
at pointers.

firstExample.c shows the address of (&) and dereference (*)
operators, and tries to make clear what they do.  It also
tries to make clear the distinction between *p and p -- the
thing p refers to and p itself, respectively.  Finally, it
shows that array elements are laid out consecutively, so 
that addresses related to arrays can be computed from the
array index and the base address of the array.

secondExample.c shows that pointer arithmetic is performed
in units of the type that that the pointer points at.
For example, p+3 means "3 of the things the pointer points at
past where it points"

secondExample.c also shows that C will not try to make 
sure that the result of pointer arithmetic is a meaningful
address.  C figures you know what you're doing.

Finally, secondExample.c shows that bits in memory do not
have a type.  It uses both an int* and a char* to examine
the same bits, and that's both legal in C in actually has
a well defined meaning.