We now leave data structures for a spell to talk about something new: pointers to functions. Like pointers to data, pointers to functions give us a level of indirection, so we can hold in a variable the address of an object rather than the object itself. Further, with a pointer, the same variable can refer to different objects over time.
When you write a function, you write the return type before the function name, then the parameters after the name, and finally the body. If you declare a function pointer instead, you should put the name in parentheses and put a * before the name. Thus, ...
