Introduction and example usage of callback function in C language

This article introduces the knowledge of "introduction and example usage of callback function in c language". In the operation of actual cases, many people will encounter such a dilemma. Next, let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

1. Declare a function pointer using typedef.

2. Use C language to implement an and function pointer return value type.

A function whose arguments are all the same (the name of the function is arbitrary).

3. Pass the implemented C language function as a parameter (in fact, the passed function pointer).

4. Call the callback function when the specific situation is satisfied.

Example

/ / callback function typedef int (* callBackFunc) () with no parameters; / / callback function with parameters. The callback function parameters can be one or more typedef int (* callBackFunc) (int x); typedef int (* callBackFunc) (int x, int y, int z); and "introduction and instance usage of callback functions in c language". Thank you for your reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!