Pointers in C Programming: A Modern Approach to Memory Management, Recursive Data Structures, Strings, and Arrays

© Thomas Mailund 2021

T. MailundPointers in C Programminghttps://doi.org/10.1007/978-1-4842-6927-5_13

13. Function Pointers

Thomas Mailund¹  

(1)

Aarhus N, Denmark

 

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, ...