How often are pointers to functions used? Should i implement them in my programs?
To be honest I have never had to use them up until now.
You should only implement something in your program if there's need to, it's not because you've the possibility to do something, that you actually have to do that "something" as well eh?
Function pointers work great for callbacks and generalized behavior at runtime. If you're doing something where they can be used and they're the best choice, you should use them. What you shouldn't do is look for places to use a random cool feature you just learned. That results in bad designs.