In this book, you will create some real programs, and for this purpose, you need to
learn a programming language, which is what gives the computer its instructions. Programming languages provide the interaction between computers and humans. They are strict enough so that absolutely dumb computers can understand them, and yet they are human enough so that programmers can write code using them.
Over time, many programming languages have been created, and many are in use today. Each language has its virtues and drawbacks.
For this book, I have chosen the C# programming language, which is my number- one language both for professional development and for teaching. It’s about 20 years old, which means its creators could avoid the known flaws of older languages when developing it. In addition, it is now a time-proven language, not to be readily replaced by some new fashion.