Callbacks in C
A callback is any executable code that is passed as an argument to other code, which is expected to call back (execute) the argument at a given time [Source : Wiki]. In simple language, If a reference of a function is passed to another function as an argument to call it, then it will be called as a Callback function.
In C, a callback function is a function that is called through a function pointer.
Below is a simple example in C to illustrate the above definition to make it more clear:
I am function A
In C++ STL, functors are also used for this purpose.
This article is contributed by Ranju Kumari. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to email@example.com. See your article appearing on the GeeksforGeeks main page and help other Geeks.
Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above.
Please Login to comment...