Does Function pointer make the program slow?

Question

I read about function pointers in C. And everyone said that will make my program run slow. Is it true?

I made a program to check it. And I got the same results on bo

Answer 1

Calling a function via a function pointer is somewhat slower than a static function call, since the former call includes an extra pointer dereferencing. But AFAIK this difference is negligible on most modern machines (except maybe some special platforms with very limited resources).

Function pointers are used because they can make the program much simpler, cleaner and easier to maintain (when used properly, of course). This more than makes up for the possible very minor speed difference.