Functions are an essential concept in programming that helps make code more concise, reusable, and easier to understand. This video tutorial offers an excellent introduction to functions, what they are, and how they work. We also learn how to create functions that allow us to reuse code, and help us avoid redundancy in our programs.
One example of a function we learn about in this tutorial is the ability to calculate the area of a rectangle. By using a function, we can input the length and height of a rectangle and calculate its area. This example highlights the importance of functions and their uses in programming.