What does the "#include <iostream>" do, why is it there?


iostream is a file that includes some built-in functions like cout() and cin(), so to be able to use these functions you need to include this file first with #include <iostream>.

It’s ok if you can’t understand it well now just keep in your mind that you have to write this line to be able to use cout and cin and some other functions. And don’t worry you will understand what exactly is this line does in detail after learning the basics, so keep going :boom:.