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Another way to tie a pointer to an object is to use the
address-of operator, &, which obtains the address of an
object in memory. For example, if c is an object of type
cylinder, then the value of the expression &c is the address
of that cylinder object, and, inasmuch as the value of &c is a
cylinder object's address, you can assign that value to a cylinder
pointer:
cptr = &c;
The address-of operator is not used as much in C++ as in C, because C++'s reference parameter feature, introduced in the hardcopy version of this book, reduces the need to pass pointers as function arguments.