ELI5: Explain Like I'm 5

Function pointer

A function pointer is like a regular pointer, but instead of pointing to a piece of data in your computer's memory, it points to a function. It's a way to store the address of a function so you can access it later. Think of it as if you were storing a list of things you want to do. Instead of writing down the instructions for each thing you want to do, you write down the address of a function that has instructions for that particular task. Whenever you need to do that task, you just have to look up the address of the function and tell your computer to go to that address to get the instructions.