What Is Function?

It a something that defines something about something to do something. We are kidding. A function is a unit of code often defined by its role within a more excellent code structure. It's like a sandwich but with bread and meat. Specifically, a function contains a unit of code that works on various inputs, many of which are variables. It produces concrete results involving changes to variable values or actual operations based on the inputs. Functions can be used in many different ways depending on what it does and what it accepts as input. They can be used to encapsulate specific actions so that other functions or code blocks can call them without repeating those actions every time they need to be performed. Functions can also provide more clarity when reading through code because they clearly define what each section of code will do based on the inputs provided when calling them. The function is the little engine that could. It starts with a user event, runs through the code, and produces results, and you can't just call it by yourself. You need to call it from a larger code structure, which we call a "function. " The code structure tells the function where to start and end, what inputs to take, and what outputs to give. Then, you can use those outputs depending on the results you're looking for. Do you want to know if a number is prime? If so, you'll need to know that your function must return either true or false when given a number. The function will then input a number and check whether it divides evenly by any other numbers besides 1. If the number does not divide evenly by numbers other than one and itself, then it is prime!